The point comment was actually: I know you feel at least a little bit like shit for hurting me, and I feel like shit at being hurt, so we BOTH lose. But Demios is probably pretty happy with the results because hey she got to cut shit. He wasn't so much trying to make Vincent suffer as 1. Not giving into the desire which he normally would, which is get pets from Vincent and feel better and 2. Not wanting the situation to be written off and not talked about. He doesn't want his deference or even his apology. He just wanted it established that he wasn't going to LET Vincent do it again. And it would have been nice if Vincent had admitted he flipped and didn't necessarily mean to hurt Yuri but he wasn't holding his breath on THAT.