Friends come and go. That's life. People change or move on. It's inevitable.
It's not healthy to hang on to toxic friends. You already know that.
Your friend has decided to move on in a direction you don't want to go. Let her go. You have no choice, really. She'll go where she wants, and your choice is whether to follow or not, and you know you don't want to follow that nasty complaining group.
Toxic friends are best let go when they go.
I'm wondering if it's me that broke it.
Ah, the true codie! if it is anything you did, then it was meant to be broke! You aren't required to keep every friend ever made for ever and ever! You grow, and they grow, and not in the same direction.
Remember, there are a LOT of alcoholics and addicts and ACOAs out there. Not everyone you meet is a 'normie'.
But still it hurts to loose people even if they were toxic.
100% codie feelings. It's ok for it to hurt, that doesn't mean that it's a bad thing. To live is to suffer, after all. then you get over it and move on.
You are probably learning more how to be a friend, since you know that friends can be toxic, and that bitchy cliques of complainers are not who you want for friends.