Actually my mother has also never sat for Charlie, either. Not once, not ever. She used to ask all the time but now doesn't - she knows my reasons quite well now. For me, it's just that I simply don't trust her to not do things like smoke in front of him (he's asthmatic) or give him soft drinks, and I honestly don't believe she would respect the boundaries I have in place if she wasn't supervised, so if that means I have to take a sickie from work (for the 3rd time in a month) rather than leave him at her house, then that's what I do.

BS, I know you live with your parents and they are your only support base atm, but hunny they're not listening to you. They're paying lip service to your complaints but then doing whatever they feel like. You now have to choice of putting your foot down (and not allowing them to look after your baby unsupervised) or realising that they're going to do whatever they feel like when you're not watching. You have to make the decision as to what you're prepared to live with, I'm afraid, and I wish they were more sensitive to your wishes as a parent, but it doesn't sound like that's happening tbh. If she's anything like my mum (and she sounds it) it'll be agreement to your face but open slather behind your back. I honestly hope the talk does some good, but I can't help being a bit skeptical about whether it will.