? for anti-PT and pro-ST fans...

No, go back, watch the scene, turn your brain on, and then come back and answer the question. She's not trained, we saw one scene where she defended herself against unarmed thugs of visibly low combat skill.

It is absolutely a stretch of the imagination given what comes before and the universe the movie is set in. She is the first example of someone good at everything despite her situation suggesting she should not only be socially ill-developed, but also malnourished and less capable.

You haven't proved any points. I've linked to the sabre battle multiple times, and I don't feel like doing it again. Go watch their fight. Kylo is unencumbered by his injuries. He moves just fine, he bests Rey, toying with her, she is defeated until she downloads the force, and suddenly she knows how to attack with the weapon she's never used before. It's a fairly quick scene, go check it out.