I (35M) am going through a rough divorce (cheating, gaslighting, ...) with my ex-wife (33F). We have three kids (8, 5, and 3). Toward the end of our relationship, things got really bad. She turned out to be very self-centered, and I ended up with severe depression. I’m still in therapy for it. Specifically in setting my boundaries to her Our oldest daughter (8) loves horseback riding. It’s her passion, and she sometimes participates in contests. Today she had one. The kids are with me this week, and I had told my ex about the contest sometime back in June. I also told her all the details were posted online (on the club’s website and Facebook page). When she had the kids last time (2 days prior to the contest), our daughter even mentioned to her there was a contest coming up, but wasn’t sure of the exact date. On top of that, about 10 days ago, when I was deciding which horse our daughter should ride, I called her while she was with my ex, and my ex was right there during that call. Fast forward to this morning: at 7AM, our daughter texted her mom saying the contest was today and she was riding at 9AM. At 8:30, my ex texted me, furious that she “wasn’t informed.” Instead of just driving over (she could have made it in time to see most of the contest), she kept yelling at me over text. She has access to all the same information I do. But in her usual way, nothing is ever her fault, it’s always someone else’s. I was reluctant to send her an additional reminder since we have split up and my role is no longer to be her calendar. So, AITA for not reminding my ex (again) about our daughter’s contest? Should I have just sent her a reminder anyway to keep the peace? UPDATE: \- The ex was able to videocall our daughter right before the contest to wish her goodluck and I've send her a video of our daughter performing. \- My ex arrived an hour later (around 10:20) to watch the prize ceremony and I've left them (my daugher and my ex) to de-saddle the horse and put it back on the field so they could have some extra 1 on 1 time. \- So overal my daughter did not particulary mentioned her mom not being there and was overal happy with the contest and the extra 1-on-1 time she had with her mom. I took a walk at that time.