The memory manipulation can only be used to manipulate the memories associated with the erased object/person
Because otherwise holes in their memory appear and causes contradictions, it is to minimise that
So for example, if she was erased, she could erase the memories associated with herself, and then place for example, in a memory where she saved someone, they were saved by another character
She can't manipulate memories free of will, for any reason, only associated memories of erasure

I just thought it fit in since you want to minimise contradictions when you erase something, you know?
Well that's my explanation for it
I will move her over to the character tab