Do you think Eddie is treating Catherine fairly? How would he say these things more fairly, more diplamatically?

I think Eddie was rather overprotective and controlling of Catherine. Eddie desires Catherine, his niece. Even though they are not related by blood he is her guardian and has raised her like a daughter. He ignores his own wife while he acts in an immoral and harmful fashion toward Catherine, at times raging, treating her like a baby, kissing her, mocking her, and forbidding her from marrying and moving out.