I’ve posted before with this username about my relationship with my mother, but I need some help again.
My brother has been having an affair and has moved out and left my SIL and the 2dc. My mother is managing to get very involved in this situation and is making it all about her. Which is nothing new, she’s always been like this. She loves nothing more than an opportunity to get sympathy about how difficult everything is for her. The DC and my SIL are barely mentioned, apart from how hard it’s is for her (my mother) to see them upset 
Anyway it’s my mum’s birthday tomorrow so family all usually go around for tea. She’s text me now and asked me to call her when I get chance because “there’s things I need to know before tomorrow”
I know what’s coming. I don’t want to get involved. I really don’t. I don’t want to have to take sides. I’m disgusted with the way my brother has behaved, but I’m still processing the whole situation.
What can I say or do to avoid this drama without falling out with my mother? I can’t see any way apart from engaging with her and get it over with quickly. Why couldn’t she just text me whatever is so important for me to know, why does it have to be so dramatic. She’s always pulling stunts like this.
It’s making me not even want to see them tomorrow.