Is AUTHOR wrong in the post ? POST : Okay, this is on mobile, so sorry in advance. Also, I am terrible at spelling so sorry about that too.
Anyways,
I met a wonderful girl named Ashley in the fourth grade. We slowly eased into the friendship, but became attached. That right there was the problem. I found a group of friends that I fit into and I absolutely adored. But Ashley did NOT like these people.

Whenever I would hang out with them, I would always see Ashley moping and being sad, even though her numerous other friends were constantly by her side. I, unfortunately, already had anxiety issues, but the pressure to be the best BFF that Ashley was too much to handle.
I’m talking, I almost killed myself until my friend convinced me to talk to someone.

Numerous other things would happen:
She would get mad at me for the smallest things such as sitting somewhere or not arriving early for school.
She wanted me to devote my life to her, and have only one best friend, but she was always surrounded by oodles of friends. 
She had serious trust issues with me, as I trusted her with my life.
She would always have a rebound to my criticism or advice.

Let’s focus on the last one.

I finally decided this year that I was done with the crap she was giving me. This was how the conversation went down: (A-Ashley M-Me)

M: *sends a serious message about how our relationship was unhealthy and I wanted to end it or at least back down a little*

A: I’m sorry that myself wasn’t good enough. I’m sorry that I couldn’t be the perfect friend. I’m sorry that I caused you stress. I’m dealing with a lot at home and I guess I’m not good enough for you. I’m sorry I wasn’t perfect. (Simplified, this was much longer and gave off a “Woe is me” vibe)

M: I’m so sorry I never meant to hurt you. Will you ever forgive me? I’m just the worst. I should’ have said that. I’m so so sorry. I’m the worst (being serious)

A: I guess but I don’t think I can trust you much anymore.

M: Alright. It’s what I deserve.

This is very simplified.

I know she has trouble at home, but that doesn’t give her the right to treat me like that. She knew damn well that I would cave if she brought up home. In conclusion, AITA for getting mad at my friends response to her being “dumped” from a friendship?

Sorry so short. This is my first time posting like this.