I deal with this also except my ex abandoned us to move states away. She will still get notifications via email or text that she forwarded to me because they have her information on file. They have her information because I was forced to provide divorce paperwork showing I had custody of the kids to enroll them in school. Wonder how many moms get asked for paperwork proving custody when they try enrolling their kids in school. It’s reduced over the last three years but the first couple were ridiculous. Finally have a mom of one kid and dad of another kid that recognize I’m a parent to my children. Everything is stupid though. Every doctors apt, school visit, dentist apt, hell even trips to the store. Some BS content like “where’s mom” or “oh you’re filling in today”. I’m so sick of it. I cope by telling myself that at least it would be worse if the love of my life died horrifically instead of going bananas and abandoning us and I had to deal with this shit. At some point I’m worried I’ll snap at people but I never want to say anything negative about her around the kids.