HP x MCU Natasha and Lea Romanoff

Natasha and Lea Romanoff twin sisters both with their powers bound, both Potter's both superheroes both infertile but both loving, Natasha and Lea are the daughters of Lily and James Potter, the two girls when they were born had their powers bound without their parents knowledge as it happened during the night, Lea is the most affected by it, when the Potter's find out their daughters are squibs they could not care less and with that one night when they two years old they were taken and given to some Russians.
They got out of the Red Room with the help of Clint Barton who Lea later married.
What happens when the Avengers are brought to the Great Hall where Natasha and Lea are reunited with the family they knew nothing about.

Fem oc x Clint Barton

I don't own Marvel or Harry Potter, Only my OC's.