Tony Stark opens the door to his home and allows the small child behind him to walk in first. He honestly doesn't know what he's thinking, this is a child for God's sake, he can barely take care of himself, can he really take care of a child too? When he told Pepper about his idea she'd smiled and said she thought it'd be good for Tony to have to take responsibility for something other than himself (and he doesn't take responsibility for that), and Tony agreed, it could be good for him.
So the day after he'd told Pepper his wonderful idea, he went to the closest Adoption Agency and looked into adopting a child. After putting in an application of sorts multiple people wanted to talk to him about why he wanted to adopt and what not, he could do that part. That was the easy part of the adoption. The hard part was actually finding a child to adopt.
The moment she walked into the room Tony knew right then that she was the child he wanted to adopt. She was blinking up at him with those huge shimmering violet eyes, and he just knew that this was going to be his new baby girl. When the Adoption Agency agent introduced him to Margo (the little girl with the violet eyes), he can honestly say he wanted to protect little Margo, wanted to love her and keep her safe.
Margo pulls on Tony's pants, pulling the billionaire out of his thoughts. "What is it Margo?" Tony questions, smiling when Margo smiles at him.
"What are you thinking about Daddy?" She asks, eyes bright and smiling.
Tony still isn't use to being called 'Daddy', but he's positive he'll get use to it. "Nothing Princess, just thinking about how I met my Princess."
Margo smiles at Tony and starts wandering around the house. Intrigued by every little detail of everything in the house. She panics and runs behind Tony when JARVIS asks Tony what a little girl is doing in the house.
Tony smiles, an honest smile not one of those fake ones he gives the press, and knows that this little girl is going to be good for him.