Abby Quincy has lived in a castle for years, why? Because her parents made a deal with Rumpelstiltskin and the price was their daughter's freedom.
Abby has fought to stay alive but the dark wizard doesn't make it easy for her, when her blood can heal, break any curse and reverse any spell but one, oh yeah and I forgot to mention, she's only 15.
When the curse hits, she's sent into a deep sleep, when she wakes up, Gold tells her that she has to help the savior believe in order for them to return home, but she's not the only one trying to help Emma believe.
Snow and David never sent Emma through the wardrobe, but she was still destined to break the curse. She was the only one is Storybrooke who aged, and she knew something wasn't right, until her mom found a book of fairytales for Emma and it answered all of her questions.