She had to keep her sons safe or Megatron would kill them.
A femme fairly young was forced to be a decepticon even though she only wanted peace, she was carrying twin boys and she needed to give them up so they could live a some what normal life.
Upon arriving at the Autobot base she came up to the tent containing mates Jazz and Prowl. She looked down at her sons and wept before she secretly entered the base. She knocked on the pole of Jazz and Prowl's tent that was outside the base.
When they came out they found her. They were about to alert the others until they saw a red and yellow sparklet in her arms.
"Please I need you to care for my only sons. They are the only thing I have left." the femme begged. Jazz glared at her and looked at his mate.
"Why don't you raise them yourself Sunnyside?" Jazz growled. She got down on her knees with the two sparklets in her arms.
"Because I want Sideswipe and Sunstreaker to at least have a some what normal life and Megatron promised to kill them in case they were abominations. What would you do if it was your own sparklets?" she said crying.
The two sparklets soon awoke and giggled reaching up to their carrier. The little blue crystals around their little necks began to glow with happiness. She half smiled down at the two and looked back up at the two before her with her cheek plates stained with tears.
Prowl gave in and knelt before her laying a servo on her shoulder.
"All right we'll take care of them is their anything you want us to do?" he said gently.
She nodded and replied, "I want you to care for them like your own and when they are old enough to understand please. Also tell them that I will return and tell them that are special. And don't even try to take off these crystals for they are part of them."
She smiled down at them and kissed their little helms saying their names when she gave them to Jazz and Prowl and she whispered old in old Cybertronian, "Long last the princes."
This Idea popped in my head when I was watching G1 version of Transformers. I also added a little twist to the story. Hope you like! Review! :)