AITAH for not wanting to be a part of my daughter’s quienseñera?

Some pre text and I’ll make it short as possible. My kids mom was in a relationship with a man(let’s call him David) since my daughter was little. They have two kids together. He cheated with a women on their softball team and they separated, during those 3 years of long custody battles my daughter was staying with me because her mom didn’t really have a stable living situation. I helped her mom move multiple times when she was t trying to find a place to live.

During that time I took care of everything for my daughter, I took her to doctors visits, dental visits, took her to all her practices, bought her everything she needed, school clothes, school supplies, I went to sports meetings, teacher meetings, opens when she was hospitalized overnight I took time off of work to stay with her. I did everything as a father cause her mom wasn’t able to. I was still doing these things when she was still living with her but not as often because she was a stay at home mom and they also lived an hour and half away. While I was doing all this I was still paying child support.

After all that she ended up getting a house in my town. She was dating some man, they broke up and she got back with David. After that my daughter decided to go back to living with her mom. Her mom immediately raised my child support out of nowhere. I had everything budgeted already because I thought she was going to live with me. I was going to throw her her 15 party, I was gonna get her a car, I had a savings account set up for her, I had everything perfectly set up for her future. I explained this to her mom and she still took me to court.

I had worked a lot of turnaround those years which helped get everything for my daughter while still paying child support. They averaged everything out to me making 12k a month and now with no overtime and no more turnaround I’m making more like 5k a month. I still have to pay that amount, I’m driving uber to make up for some of money.

Now her mom is throwing her a 15 and wants me to help. They basically took my ability to do all these things and she la doing them herself. I don’t have much time anymore to see my daughter like I used to bc my free time is spent working different hustles. My daughter broke my heart when she decided to go back to her moms and David’s after everything they did. I still don’t understand till this day, I don’t resent her but it is hard to comprehend her decision. I feel like I was used while her mom decided what she was going to do with her life. They’re throwing a 15 now and want me to go but I don’t want to be around those people especially when I can even contribute financially because of the situation her mom put me in. I told them I’m not going or helping. I love my daughter but I feel like I’ve been taking advantage of. Am I the asshole for not wanting to be involved in my daughters 15?