I agree, She’s angry through so much of this movie, Even the training scene was pretty aggressive.
That’s why I can’t wait for Rey Nobody. They actually have a semi-well set up story about Rey falling due to her own anger and darkness; but then they completely undermine it by saying the reason she might fall to Dark Side is because Palpy is her grandpa, and “the Dark Side is in her blood” or something arbitrary like that.
This, so much this.
I have a friend that was abandoned by her parents and she sympathized with Rey when Kylo told her that “they sold her for drinking money” and Rey feeling worthless and not loved.
Due to that abandonment, my friend has several traumas including anger issues.
Rey falling to the dark side by insecurities, anger issues and traumas, is more mature than:
“I’m going to the dark side cuz vengeance and genes!!!”