Cutting off a ten year friendship

I had this ten year friendship, she was my first friend in middle school and we were friends all the way until about two years into college. In middle school we were best friends, at least that's how I saw things. I would do anything for her, always go over to her house, or try to impress her, or get her gifts when I went on vacation. She did the same on occasion but as we got older more things got in between us. Our friend group consisted of seven of us, But all of us still had that one friend that was closer than the others. I thought she was mine but I soon realized that every year throughout middle school and high school she replaced the girl she called a "best friend." First it was me, then year after year she always found another. She would always come back to me for various reasons. But our senior year she got in a relationship with a guy that I didn't care for, and he really drew a wedge into our relationship. Then I had my relationship with a guy she didn't like either. I did my best to try and hangout with her and her bf at events even though I didn't like him, but she never did it for me.

Then one day when push came to shove I realized she wasn't my friend. I was crying on the sidewalk, thinking about jumping in front of a car and ending my life. I called her, told her the situation and that my boyfriend had hurt me and some other things happened causing me to want to end my life. I had hoped that she would drop everything to come find me. But instead she goes on about how horrible he is and about how I deserve better. She was right, but at the time I still loved him. So hearing her bad talk my boyfriend while I was suicidal only pissed me off. I hung up on her and just went home, cause I was so mad and upset at the situation.

From their our relationship has never been the same. Some drama here and there with friends. But it always came down to the fact that she wasn't a true friend or what I wanted in a friendship. I put up boundaries about conversation topics when we hungout, because I didn't want to talk about her boyfriend or mine because it only ended in anger. But then she would just push me to work out with her. We just didn't have the connection anymore,

So now she was the last person to text me, saying how we should get together with our other friends, but I was out of town. But now neither of us have tried to connect with the other. We're both single now but all the hurt I had is still there. I don't trust her anymore and I just get irritated whenever I see her post on social media. So my real question is should I block her and totally cut her out of my life? Should I just leave it and try to let my feelings go? Or should I try to connect with her and make amends?

I just saw her today getting a tattoo with her new "best friend" which just stabbed me in the heart. Like she has totally pushed me out of her life ...thoughts?