Our angel [Avengers fanfiction]

Prologue

During another rescue operation, the Avengers find a young, only 7-year-old girl named Sophie.

Sophie was 2 years old when she was kidnapped by Hydra, who killed her parents. Hydra performed various experiments on her that caused Sophie to have various abilities. 

Avengers decide to take her with them and ensure her safety by having her live with them in Stark Tower.

Will Sophie get used to her new life or will she run away from the people who are trying to help her?

Will the Avengers win the young girl's trust?

Will Hydra come back for her?