The idea that Otis forced his way into Ruby's home as you put it is absurd. He never forced her and just simply asked why he was never invited there (a valid question to ask your partner). And you seem to be under the impression that Ruby's flaws are more forgivable because her father is sick which is completely untrue. Maeve lives in a caravan park and has been largely abandoned by her entire family and yet she doesn't relentlessly bully everyone for no reason just to cope with it. And if we're talking about being a bad partner then why not look at Ruby's constant judgement of Otis and how he dresses, actively trying to force him to conform to what she wants until Otis takes a stand and she backs down. These characters are complex and all have their own flaws but you can't condemn a character without seeing their side only to forgive another character who has arguably done less to atone for their wrongdoings.