My parents have started looking after my 1 year old son one day a week so I can work. Both times they've been into mine and my partners bedroom. First time they said my baby crawled into there, so they went to get him out. Second time there was a little pile of clean laundry on our bed, when I came home mum had ironed it. I thanked her, as I know she's only trying to help, but she shouldn't have even known it was there. My partner really doesn't like it, he says it's our personal space. I agree but have no idea how to say to them..