(Spoilers Everything) What if Arya...?

Kills the actor who plays Ned Stark in the play instead of Lady Crane. It's clear in the last episode that she is bothered by his performance and could use her anger against his portrayal of her father to kill him instead of or possibly with Lady Crane. She expresses to "Jaqen" in the last episode that she likes Lady Crane and probably doesn't want to kill her. I believe that her killing Ned's portrayer in the play rather than Lady Crane will be all the proof the FM need to prove that Arya can not become No One and banish or kill her.

What do y'all think?