@bigtiddyoneesan I dont think she is reaching the point where she is irredemable. Most of what she has done has just been mild teasing and not showing up to their movie theater date. Overall, I think she has been making his life more enjoyable than if she wasn't in it at all.
Now the stalking is anorher matter, and that is not something we can just turn a blind eye to. But reading the comment sections of these chapters you would think that she has been doing far worse. In reality, this manga is twisted but still likely more wholesome than most romance manga.