Unforgiving

A child taken young, she cant remember her past, a killer, an assassin in the making, what happens when her next victims are her parents?
Will she remember them, or will she kill them?

*I don't own any of the MCU characters or their plot lines. I only own River, her plot and any other characters I create for this story. It will also not be following the movies either, although I may still do infinity war and endgame :)*