I think who Reys parents are has sufficiently been beaten to death. Can we talk about how she was able to best Kylo Ren in their saber duel at the end of the film? How does dhe best a trained warrior?
Probably related to her parents question: If she is really the child of two force users, the innate ability is there, she runs on instinct. Same huge force ability if she comes from a force experiment / cloning.
I dont want to think about she being created as vessel for one of the Sith Lords to ensure immortaiity, as being used in comics. Luke discovered, rescued her from Snoke, force wiped her memory and put her on a backwater planet.