Did I Do Wrong Ending Ties with My Cousins?

Assalamu Alaykum sisters - please hear me out. I'm 16f and my cousins (26f, 21f, 17f, 12f) have been excluding me and my sister (12f) for years. They'd ignore us for no reason and then act like everything was fine two minutes later. It hurt, but we tried to let it go. Their mothers often left my mum out too, and I think part of it might be because my mum was born here while they were born abroad. My cousins gossip about each other behind backs, and when I asked why they were mean they'd just shrug. We sort of normalised it until a few months ago I found out they have a group chat without us called 'OG Familia' and they were very active in it - that stung a lot. A few weeks after, at a family gathering, the 22f and 26f were saying some people aren’t worth the effort and are just too much. My mum quietly said, “Guess that’s our cue to leave,” so we got up and left (there was an accidental door slam). Since then they’ve made it clear they leave us out even more. Telling them how hurt we were seemed to make them exclude us further. They go abroad together, discuss future trips with “all” the family in front of us even though we’re never invited, and they barely speak to my mum now. Islam teaches us kindness, maintaining family ties, and forgiving when we can. I’m torn - was I wrong to distance myself from them, or are they being toxic and I was right to protect myself and my mum? TL;DR: My cousins purposefully leave my family out. I’m unsure if, as a Muslim, I was wrong to step back since cutting family ties is discouraged.