The fact that she got knocked out twice in the film indicates that she can be hurt.
You’ve defeated me with your logics. Allow me a “concession eyeroll.”
Also what are you going to say when Kylo defeats her in in a fair fight in TLJ?
Assuming that’s a hypothetical rather than a spoiler, well I guess I’d say such an outcome just makes no sense given that she defeated him with ease before even becoming a padme or whatever nonsense they intend to do in Jedi II.