Breakup drama?

Lets say you breakup with a girl, whom was quality, was good to you, however disrespected you and rejected you in some ways. Stating that she only spends time with you because she feels sorry for you, says that she is wasting her time with you, and says that you have mental problems. You consequently breakup with her, break your ties with her, and ignore her as you feel she may just be using you and doesn't think much of you. Would you feel justified in breaking it off with her? I went with my instincts and did so. I just need some opinions and advice and feel I could do better than her, to find somebody who actually appreciates me. I felt as though she may have some self-esteem and confidence issues, and was trying to compensate for these deficiencies by putting me down and attempt to make me feel inferior to her. I was wondering if this is something common with women, who may sometimes try to make themselves feel better about themselves by putting down others.