Can't stand DP's ex, we are nice to each other when we see each other but I really can't stand her, she's so full of herself, tried to tell DP what to do and boasts about everything. She will be coming next week to drop of their DD, first time she would have been to our new home. AIBU to say to DP I don't want her coming in the house? I know she will try to 'have a nose' but I can bare the 'oh I would have had this here', 'oh this room is smaller than mine' etc. am I being petty?