Firstly, you should understand that she is your girlfriend, not your wife. There should be some limitations between you two both, one should not cross the limit lines as it is a sign of disrespect in the relationship. If your girlfriend has taken such steps then it is better to leave her behind and move on because in this situation your partner is rigid and stubborn in nature and they wouldn’t understand what you’re trying to say or do. Your friends are also being involved by her without any reason so it’s your responsibility to keep your friends protected and safe. If the person doesn’t respect your privacy then you must let them go and not try to sort things out because it will mess up things and make them even worse. So, talk to her and let her go as it is for your own good.