How 'bout that ex

I thought I’d use this forum to vent a little…

My mother’s uncle just died (heart attack) and she was going to watch my daughter tomorrow. my daughter is with my ex (mother of daughter)… long story short I call her to say well “My mother’s uncle just died” and she won’t be able to watch her because she is going to console her mother (my grandma) and I have to go out of town tomorrow for work. She says “your all a bunch of retards, why can’t your mom take her with her, isn’t she (daughter) family!” and proceeded to hang up on me. She is insane! this after just 2 years ago her father died and I jumped to help her when she had to deal with that, and have ALWAYS been there when she asked for anything else! arrgghhh! why is she so difficult! ok, ok, just needed to type that out… any responses are welcome…