Who are you?

Gibbs adopted a troubled girl 8 years ago. He didn't tell anyone since she never did really good with a lot of people around. She was a foster kid since she was 3 years old, it's safe to say that she doesn't trusts easily and is afraid of losing the only person who ever cared for her, Gibbs.
He safed her from her 47 foster dad, who abused her quit badly.
When said ex foster dad escaped out of prison and went to get his hands back on El, the secret was revealed.

A short story