Henry's Twin: Anna The Black Swan (OUAT Fanfic)

Emma gave birth to twins. While Henry is adopted by Regina and given a better life. The other child named Anna stayed in the Foster care and adopted by a doctor.

The curse is broken, She and Mary Margaret came back from Wonderland when one day, new book appear and brought them to someplace where they can watch someone past who is gonna help them for the upcomimg threat.

To everyone shock especially Emma, they watch the life of her daughter who is now matured and different from what she's expecting.

What would Emma witness? It will be good or bad? How would she react if she learn her daughter past and what she is now?
What would Emma do to save her daughter and gain her daughter love and trust.

Choose Pairings:

Regina/Anna
Ruby/Anna
Zelena/Anna
Maleficent/Anna
Anna/Natasha/blackwidow(avengers)