Seeing how he reacted to her fainting, my guess is that hes just extremely awkward and says way too little and thought providing for her and letting her do what she wants is the best way to make her happy. I’m also guessing that he didnt really abandon her in the original and it was part of some bigger plan no one told her about. Hell, her father probably never realized how depressed she was in the original, so he was probably major shooketh at her suicide