
No one is obligated to take their time to try to help someone who is hurting them, and that's nothing to do with "political correctness," it's looking out for yourself and having priorities. I'm not saying it's not helpful or good to let someone know what they're doing wrong or talk to them, but if someone is making you unhappy, you have absolutely no obligation to stay in contact with them, give them explanations, or try to help them. Sticking around can even enable people in some situations. Sometimes cutting ties is just the slap in the face someone needs to wake up. In my own experience with abusive people, it's only when everyone has bailed on them and they've hit rock bottom that they try to better themselves and finally realize what they've been doing wrong.