Rey was able to do a mind trick without even seeing it done or being trained regarding it, but she did experience Kylo reading her thoughts, so she isn’t entirely unfamiliar with the idea of manipulating with someone’s mind.
This is the thing that bugs me, and it’s because of the execution - we don’t see her thought process at all. I came to this conclusion as well, but I shouldn’t have to mentally edit the film for them.
Honestly R2 magically coming alive is the biggest face palm in the movie to me. I don’t get it and I don’t like whole the map thing.