I am friendly with a mum and she is friendly with me and another mum. The problem is that the other mum is constantly unkind to me and makes a lot, and I mean a lot, of unwelcome comments - about me, my DD, my home etc etc. I have not said anything to anyone - don't want to be bitchy- but resolved to breezily avoid her. Unfortunately the friend I do like is keen to bring us together as a threesome, and will make arrangements with me and then invite her. Do I say something directly? Or just cry off once I have found out she's invited? I am not great friends with the mum I like, IE not anywhere near the point of being able to speak completely frankly, but certainly enjoy her company.