I applaud the incredible rendition for the Force healing illustration. However, I do think that at a conceptual level, it is a tad coincidental that Rey was reading up about that particular power the very day she would need to use it twice (and presumably for the first time since it is suggested she doesn’t leave the base).

I think having her verbally tell BB-8 that she read up on it in the books is enough of an explanation if one would actually want to include one. I personally don’t think it’s super necessary to have any explanation (after all, nobody questioned Baby Yoda using it) but that’s beside the point, I guess.

Alluding to the concept of Force healing before it happens feels a tad premature imo vs having Rey look up the Wayfinder on the book because she saw it in her vision, which serves a plot function that strenghten the connective tissue of the whole first act and pays off in the third act.