So it's still early days (just gone 7 weeks) but I'm already dreading having to tell her if and when we get to the right time (definitely not before 3 months).
I have not had a great relationship with her since my teens, often marked with long periods of not speaking (at one point, a few years ago, there was about two years where we barely spoke to each other and when we did we'd just argue).
It's not that she's done anything terrible (although there have been the odd things that were very unmotherly) but overall she's a very selfish, very stubborn person who only does things that suit her own agenda (while telling me how awful I am) and, on top of that, I've always felt she never really liked me.
The two things I'm mainly worried about are a) once I tell her she'll decide to try and patch things up just so she can play the caring mum (especially in front of her friends) but I know it'll all be fake and will fall apart eventually like it always does and b) that I'll end up like her especially if I have a DD.
It's really getting me down atm so any advice on how to tell her and how to set boundaries would be much appreciated.