They should watch all seasons of Better Call Saul and Breaking Bad, analyze it and realize how good, female characters are written.
You mean as total psychopaths? I’m a big Breaking Bad fan, but female characters are really not Vince Gilligan’s strong suit.
Otherwise, I agree with your criticisms of Leia. I don’t understand why everyone seems to love her portrayal so much. A bit of precociousness and snark is fine, but having her do complex psycho-analysis of everyone she meets was a big mistake. Maybe it would feel more natural if Leia’s actress looked a bit older, but that’s out of the scope of a fanedit.