Is she a nasty person?

When I was in my last year of school at 18 I ended up having very bad depression. I had a friend who I was friends with since I was 4 years old and in the year that I was struggling she went off with the cooler gang who I was also friends with but would just ignore me in the halls and talk to me like she barely knew me. If she was talking to me outside a class and her cooler friends came along she would stop talking to me even If I was mid sentence. I was also friends with her cooler friends too so not sure why she behaved like that. After being close friends since we were 4 she just treated me like a stranger and once our mutual friends boyfriend got verbally abusive to me in the hallway. He just didn't like me for no reason and she never told him to stop or asked if I was okay after. Is she a cold person?

Is she a nasty person?
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