About 10 months ago, I was with my mum and son (almost two years old at the time). We were in the car and she offered him something to eat that she'd bought specifically for him, he said no I don't want it, and she told him to off. I was astonished and speechless in shock. I said to her you cannot speak to him like that, he's just a baby. She said she didn't know what happened and it just came out. I wish I'd been more stern at the time but I was just so shocked that I didn't know what to say. My mum has major major issues and has been verbally and emotionally abusive to me and my siblings whilst we were growing up. Since this happened, I do not trust her to be alone with him. She is starting to pick up on the fact that I very very rarely let her be alone with him, and if she asks why, I will have to tell her the reason. This will likely cause her to ignore me for weeks perhaps. AIBU to still feel this way or is it sensible to keep a distance between them. I never want my children to experience what I did whilst growing up and feel I am protecting him. But perhaps I'm being over cautious and put it down to a one time thing?