I'm a single mum to two autistic DC, so things can be tough at times. My eldest (8) has had dinosaurs as a special intrest since he was 1, and has been looking forward to the new jurassic world movie for months. I wanted to take him to the cinema to see it, and can't take youngest (5), so asked my mum to babysit youngest for a few hours (this is the first time babysitting in over a year, so don't think I take the piss with asking for help).
Today was the only day she could do which happened to also be his end of year cello proformas, so that plus the cinema in one day was always going to be a lot of sensory imput and near the edge of what he could cope with. On balance I decided the benefit of supporting his special intrest and have some 1:1 time was worth it. He did fantastically at both, and although he was a bit fizzy by the end, would have been fine if the rest of the day had been quite and calm.
Here's the bit I'm annoyed at. When we got back to my mum to pick up younger DC, she had invited her 3 other grandchildren round to play, so without warning, my already fried DS was in the middle of a noisy crowd of excited children, and inevitably had a meltdown within 5 minutes. On another day the kids would have had a great time playing together, but usualy when we see the cousins, that is all we do that day, as it takes a lot of my kids capacity.
AIBU to be a bit annoying at DM for this? I understand I can't dictate who she has at her house, but if she had told me she was having the other DGC I would have re-arranged. She babysits the other DGC at least once a week, so I'm kind of hurt that she couldn't do a very rare, one off favour for me/ my DC without prioritising them (there was no reasonfor them to be there other then been bord at home).