This is Lily's story. It's why she is the way she is and why she attempts to kill Harry. I changed the ending a little bit. Please let me know what you think.

When Lily was a little girl she loved to be around her mother and sister. She believed they were the best people on the planet. Then she turned nine and her mother sat her down to talk to her and Petunia.

"A mother only has so much love, children. Just enough for one child. There is no possible way I could teach you both all of what is necessary to be a lady. So from now on, know you are competing for my love and only the one with the most to offer can have it. Only the best child is worth my time."

When Lily first heard these words coming from the mouth of her beautiful mother, she could scarcely believe them. She tried her best to do well in school and stay clean. Lily did her best to be the best child so she could have her mother's love. However, Petunia, who was older and smarter and eager was always better, always a step ahead. Lily's mother scorned her. Would look at her disdainfully when tears welled in Lily's eyes and sneer she had no use for weak children's whining. When Lily tried to hug her, mother would only push her away whispering you'll have to be perfect to deserve mummy's love.

Then something miraculous happened for Lily. She was invited to a school of witchcraft and wizardry. When the letter first arrived her mother scoffed, telling Lily lying is not the way to receive her love, while Petunia giggled at her sister's plight. Then a woman, named Professor McGonnagal appeared and proved witches were real. She took Lily to a magical alley where she received a wand and books. Professor McGonnagal brought Lily home. When Lily walked in the house, she was shocked to receive a hug and kiss from her mother. "You've done it Lily," she said. "You are my most worthy child. The child I will teach and love. Petunia has been moved from her bigger room into the room where you were, and you now get the bigger one. Oh, the wonders we can achieve together my child. You must be careful to appear sweet and naive to everyone. Write mummy every week and I will guide you."

Lily excitedly drank down every word her mother spoke, internalizing it.
"The first lesson you must learn, child, is love is weakness. You must take care to never be weak. I am the only person you should love and in time, only your child. You are going into a world of magic. You'll have abilities I can only dream of. Use them child. Learn everything and soon the world will be ours."
Lily left for Hogwarts with her mother's words ringing in her head. She obediently wrote home once a week, detailing everything she learned of the magical world to her mother. In return her mother sent back detailed instructions of how to manipulate people and to gain what she wanted. Throughout her years at Hogwarts, Lily and her mother schemed of how to bend this world to their whim. They realized the only way to enter the high society of this world was to marry well. So during her seventh year, Lily finally accepted a date with James Potter and was married to him shortly after their graduation.

After her marriage, Lily began to see her mother less and less. She began to wonder about the lessons she was taught. She spoke to Petunia again and both agreed they would never inflict the psychological torture their mother practiced on them onto their children. Lily did her best to become the person she had deceived the world into thinking she was: sweet, kind, and innocent. She allowed herself to love James Potter, but found she always held something back.
Lily found she was pregnant. She swore to herself, she would love this baby with everything she had and she would not inflict the same standards upon them that were inflicted upon herself. They soon found she was expecting twins. While in the mediwitch's office with James, Lily forced herself to be excited with him. Later, she sat alone in a corner in what would be the twin's nursery cursing her mother and promising to love both children equally.

Soon they were born, and Lily could not help but check to see which one was healthier. She naturally gravitated towards Kevin. He was bigger, stronger, and louder than Harry. Surely this was normally. He just demanded more attention. She still loved Harry. The dreams of her mother were pipe dreams at best anyway. Money, fame, and glory would never occur for her. Without that temptation, Lily knew she could love them both.

Voldemort came and attempted to kill the twins and Lily was overwhelmed with fear. Her babies, they had survived the Dark Lord, but how? She held them close, knowing at this moment she loved them both. Then Dumbledore declared it was Kevin who defeated Voldemort and saved his brother. It was Kevin and he would be famous throughout the Wizarding World. It was Kevin who was a hero.

Kevin reverberated throughout her skull. Echoing again and again. Kevin is the best child. The child who deserves her love. Kevin is their ticket to fame and glory. Kevin is her way to the top of the Wizarding World. And Harry, of course she still loves him. He just can't be her focus. She is a better mother than her own mom. She will not pit her children against each other in a fight for her love.

But as the years pass she find herself neglecting Harry in favor of Kevin more and more. Forgetting to do something for Harry. Being excited over Kevin's accomplishments and barely noticing Harry's. When she notes this change in herself. She is furious. She is not her mother. She is better. She is the best. She sits in the corner of the twin's old nursery and cries, rocking herself against the wall. Suddenly, Lily realizes, this is not her fault. She is the best mother. It's the other brats fault. The one following her perfect Kevin around. Harry has always been a follower. He followed his brother out the womb and has been following ever since. It's his fault. If only he was gone, everyone would see and know how great of a mother she is and Kevin will become everything he can be. They'll be famous and the Wizarding World will be theirs.

She curses Harry one day, just for fun. It's a mild one and it only causes him to itch a bit. He disappears for a while and it's like her, James, and Kevin are the perfect family. She begins to obsess over it. Harry must go. One day she finds him alone, slowly cutting his wrist. Smirking to herself, she casts a compulsion spell, urging him to cut more and deeper. Apparently, Harry's love for his brother Kevin is stronger than her compulsion, because all it takes is her wonderful, perfect boy, begging the useless brat to never cut again to get him to quit.

One day, Dumbledore called Lily and James to come to the Hospital Wing at Hogwarts because Harry and Kevin were hurt from a fight with Death Eaters. When she arrived she found only Harry was truly hurt and Kevin was fine. It was then she got an idea. She could finally get rid of the useless weight holding her perfect family down for good. She could finally be the perfect mother.

Lily spoke softly to Harry and she sliced his wrists. Explaining to him why this had to happen and how they could be the perfect family without him. She cast a spell to stop his blood from clotting and ensured the body bind would hold before softly kissing her youngest on the forehead. 'It's for the best really," she thought. 'And who could say I don't love him. I kissed him goodbye. I am the best mother.' She paused momentarily, watching hungrily as the blood from her child dripped onto the floor. "I really do love you, child" she whispered before disappearing.

When James told her Harry was in a coma, she pretended to be shocked and inside seethed with rage. How did the boy live? She was never able to be in the Hospital Wing alone with him and Madame Pomfrey had 24/7 monitoring charms on him, preventing Lily from killing him. She sat in the corner of the nursery on day, thinking of how to fix the situation when James stormed in the house, demanding to know how she could do this to their child. Why didn't she love him? He looked at her with wide eyes as she explained she did it because she loved them all so much. Harry's death was the only way to be perfect and didn't James want them to be perfect.

"We can go away my love, start over. We can be perfect."
She reached out to him and stared in shock as he jerked away.
"You're not perfect, Lily," he spat. "In fact, you are the worst, most imperfect thing I have ever seen."
She recoiled in shock. Her face disappeared into her knees and she slowly rocked to herself mumbling over and over, 'perfect, I'm perfect, we're perfect. I can make us better. We're the best because we're perfect.'

She didn't notice when they arrested her or when they gave her Vertiserum. She didn't notice the looks of shock and disgust on the faces of the Wizengamut as they listened to her testimony. She didn't notice the pity on the face of the Mind-Healer or the explanation of the programming embedded deep in her by her mother or the psychotic break caused by Voldemort's attack the Mind-Healer gave to her family. She didn't notice the walls of the mental institution they forced her into and she didn't notice time pass. She merely lived in the waking coma of her own delusions, wishing and hoping to be perfect enough to deserve love.

Please let me know what you think. I am finally working on the Nice!Dursleys story and while working on it I felt inspired to write this. I hope you enjoyed it.