Is AUTHOR wrong in the post ? POST : This happened a while ago so bear with me as I try to recollect what happened.

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I planned to go to a concert months in advance with my girlfriend at the time for New Years Eve. She agreed, we bought our tickets, housing, and travel and everything was set. We drive a few hours to get there a few days before to settle down and explore, but the day of the concert she gets sick (a cold maybe) and decides not to go to the concert. We have a few other friends coming along, so I was really agitated and repeatedly (maybe 3 times) asked her to confirm if she really didn't want to go. This also wasn't the first time she bailed the day before on a concert, last time also because she got sick, so understandably I was pretty emotional but it was out of our control.

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About 2 hours before the concert I called her one last time to make sure she didn't want to go. I had to resell her ticket last minute because I didn't want it to be wasted, so I wanted to 100% make sure she wasn't going. She flipped out over the phone and turned that against me saying it was her money and I didn't have the right to tell her what to do with it and that I didn't care about her health because I kept trying to convince her to go to the concert despite being sick.

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I figured that if a friend bailed on me last minute, I would also try and convince them to reconsider, especially when we all planned this months ago. I didn't want to bail on my other friends going as well, it wasn't fair to them as we all took a road trip for this concert, so I went to the concert without her.

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She then attacked me saying if I really wanted to spend NYE with her, I shouldn't have gone to the concert and spent time with her (took care of her while she was sick) even though she agreed to spend NYE with me at the concert. I later found out that she went to another party with her female friends and had drinks while "sick," claiming that she didn't want to be alone because I still ended up going to the concert. To be honest, she did not seem sick at all (when I came back at 3am she was still up and being active), though that's not for me to decide. I felt betrayed and when I confronted her she said she felt down at the time and didn't want to go to the concert because it could've made her sickness worse.

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AITA for trying to sell her ticket? AITA for not considering her health? AITA for not spending NYE with her?