Anakin Starkiller said:
On a different note, while I never cared much for the Mary Sue accusations levied against Rey, there is actually one instance in TFA where I think it’s true, and that’s her breaking herself out of prison with a Jedi mind trick. Is there a way to make Han, Finn, and Chewy responsible for her escape? Maybe Phasma orders Rey be brought to her at gunpoint?
I always figured it was ok because (1) Ren had just told Snoke she, tho untrained, was powerful in the Force, and (2) he had JUST tried to do something like that to her.
In TLJ she described the Force specifically as a power Jedi had to control people, so maybe she already had heard enough rumors of the Jedi mind tricks by this point to realize if she had the Force, she could do that too.