I would ask if she really means that. If she said it lot of anger or if that's what she really thinks. Quite frankly, that specific reason is pretty damning for a break up. She would be basically directly insulting you as well.
I'm gonna be honest.. Last year I told my ex her dad and her brother were assholes. I aid it lot of anger, because they judged me for a gift I gave her without knowing me, and basically told her I had no class. She also doubled down on it after saying she tried defending me. I'm not proud of what I said, and I did apologize..But it kinda put me on edge with what I was getting into into if I pursued it further, and I said to myself I would learn from that for future relationships.
Less is more. Everything you want, isn't everything you need.