Are my feelings still valid?

my friend and i got into a falling out, I had talked somewhat badly about her which I took responsibility to change and reflect and said sorry but my friend did not take responsibility and say sorry for the things she had done to make me upset.

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for more context, i had said very hurtful things to her when i was angry months ago and I know that I shouldn’t said those things angry or not. At the college we went to, she screwed over our group of friends for a boy and made all of us look back with her. I said that she needed to be humble and she can’t be doing what she wants without looking how it affects others. She would ditch our friend group when we made plans weeks prior for boys even though she doesn’t like it when people do that 2her
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more context, ik it’s a lot. I was a horrible friend to her during college because of my poor mental health but that isn’t an excuse. She told me that the guy she was talking to at the time, looked like my ex which made me super uncomfortable and I told her that which she seem to brush it off. My now ex friend, didn’t take accountability for any of the things she did to me saying, “oh that’s just me” and, with her talking stage looking like my ex, “those are two different people-
Are my feelings still valid?
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