Fuming I felt bad about my mother thinking I didn’t like her

We’ve always had a distant relationship since her and my dad split originally (back together now). I’ve had a very stressful month of doing the toughest exams of my course and having to self isolate in a new relationship 24/7 because of coronavirus. She hasn’t once checked in, sent a good luck message before exams (which if I failed 2/5 would have to re apply to the start of the course and not have a reset option). My other halves parents have sent me good luck messages, even my mates had called me before exams. I got some results back today and did quite well on them and sent her a message hoping she’d be proud. She didn’t reply and instead sent a message into the family group chat of how proud she is that my brother had ran his first 5k of the 2021, and asking for donations for doing 100 squats. I know it’s pity party-esque and trivial, but I don’t have a random 60 year old to rant about it to in spoons so here ya go