<human>: Can you give me the gist of the text in a nutshell?

Me (18M) and my girlfriend (18F) recently got in to the first fight we've had in a few months. Usually when we fight I give in and let her win just because I don't want her to be mad at me, and I don't want to not talk to her. But this time I think she is so unbelievably wrong and is overreacting more than she ever has before that I don't want to give in and let her think it's okay. 

I think *most* of the issue is just a  misunderstanding, but I think it hurt her feelings a lot. I feel bad about that but the way she reached when I tried to explain was horrific. Then she brought up some other completely unrelated problem that just escalated the argument. So we haven't spoken in two days. I really just want to talk to her, but I really want to hold my ground on this. She needs to learn to accept responsibility for things she does wrong (I'm not denying that I am also at fault in this situation, but this time it's more her than me) . I'm tired of blindly apologizing for things I didn't do just to get her off my back. So is just not talking to her and waiting for her to come back to talk to me the wrong way to go about standing my ground. Is it a bad idea to stand my ground?
<bot>: Got in a fight with the GF and want to stand my ground but don't know if I'm doing it in a good way or if I even should.