Holy crap, in this version you have the option of completely eliminating someone from your relationships. I quite like having a choice that matters so that's cool.
(Well shit, nevermind. It was a total fake-out... the character just returns a few days later and basically goes "oh wait, I don't actually have to care about what you think or how you feel, you're mine".)
(Second update: Okay... so it basically changes her to a fully "antagonistic" (Master/slave) relationship instead of building up to a more positive and somewhat consensual D/s relationship. You lose her as a "true" romance basically, but you don't get rid of her, at least not yet. She gets removed from the relationship list because she no longer cares about you (if Celica doesn't care about her)... there's nothing but the lustful obsession, possessiveness, and desire to use Celica for her own gratification and gain at that point. If you choose to respond positively instead... then the relationship will turn more romantic.)