Girlfriend goes out to have fun and have a chat.

You should find a suitable time, gently pour out your thoughts and feelings to her, let her care, don't say something that can't be corrected, let her do it. If she is still like that, don't break up in a hurry (if she really jumps off a building, it will be a big deal! ) Just alienate her slowly. People who don't respect your ideas are not worth loving.