Ok, the facts:
*Work full time so only see Pfb evenigns and weekends.
*Sister getting married next year and doing the full hit. She knows mum and me aren't really in to big weddings (I had a secret wedding)and I think she's a bit disappointed that we aren't sharing every last detail.
*Sister text me yesterday to ask if I'd go and look at some dresses in a shop about an hour's drive away. I don't want to go because it would mean a day (effectively) where I wouldn't see Pfb and the knock on effect would be that I'd have to do usual weekend stuff (chores, work) the next day thus missing child again.
*Still haven't replied. Help!