I have a very strained relationship with my MIL but won't go into the full backstory here. We had her over for Christmas Day yesterday. Today she called and asked if she could walk my baby in the pram for his afternoon nap. I said it wasn't very convenient and we wanted a quiet Boxing Day as we were tired from Christmas and are also hosting my parents again tomorrow. She persuaded my husband (her son) and said she wouldn't be a bother. I can't remember a time when she hasn't disregarded my wishes as a parent. Today I said, if you are going to walk him, please stick to the park to avoid the busy and polluted roads.
Anyway, she turns up, agrees to this and says she'll be back in an hour. 45mins later she shows up on the doorstep with a few of her friends! She says, he didn't sleep, he found all the shops (on the busy polluted road) too exciting. I bumped into my friends and they wanted to come over to see you (which definitely didn't happen as they don't go out. She had obviously planned this)
They barge in, saying we couldn't have tea could we? Totally shocked, I make them tea. She then eyes up the cake I've made for tomorrow and asks for some. I explained it was for my parents. She says, don't be silly there is plenty, walks over and starts cutting slices for her friends!
They stayed until I said, we need to make dinner for our kids now otherwise they will be late to bed. My husband noted that it was odd but said, "oh it was quite nice to see them" and "once on the polluted road isn't going to harm". In my opinion, that's not the point at all - as his parent I said what my stipulations were are she utterly ignored them.
AIBU to say that she can't take him out again. Btw, this isn't the first time. Without fail she ignores our wishes, is rude to us or pushes the boundaries whenever we see her