Emma was born with the potential to be the purest saviour or a dark villain. But her parents made sure she was born into the light. Snow White and Prince Charming weren't aware of their first child's ability with magic. She wasn't born a saviour. No,she was born dark,but her darkness is mute.
Katherine is Emma Swan's older sister.
They were out in the portal to the Land without Magic together.
She was born 2 years before Emma.
No one knows why but she came out of the portal 5 years later years later,after Emma.
All her memories of the Enchanted Forest were gone.
They were thought to be related so they were placed in the same foster system.
Katherine didn't get lucky.She got adopted by a random mom who wanted nothing to do with her. She wanted her real parents. So she ran away. She was still a kid so she couldn't support herself. She stole,like any other runaway.
So how do her real parents act when they find their daughter was taken to Neverland and with Peter Pan.
He will help her express her darkness.
(Promise you the story is better than the summary)