Hi all, need some advise or outside opinions
I have a younger brother, he's 16 and will be 17 soon . We don't have the same dad and his dad isn't in his life and hasn't ever been so it's just my mum and brother at home
He's autistic, has ARFID and a learning difficulty, he's not in education and hasn’t been since he was about 7 and prior to that he missed alot of school due to him picking up everything according to my mum (which may have been true).
Over time he stopped eating his safe foods and would eat very little then nothing at all, he was extremely underweight and he seemed unwell and exhausted all the time. In the end he got a feeding tube, this was about 18 months ago and there has been such a change in him
Mum doesn't let anyone else have him (but complains it's her doing everything), she occasionally brings him here but other than that neither of them leave the house and I do feel quite sad for my brother tbh.
About a month ago he and mum came over and I had baked paw patrol cupcakes with my DC, he was interested in them so I gave him one not expecting much but he actually ate some of the sponge. I could tell my mum wasn't pleased though
Then yesterday I had him for a few hours, my mum expected that we’d be at mine (i didn’t ever say this though) but we went for a walk and then to a little cafe, DC had a kids meal pack (sandwich/snack and a carton of juice) and my brother wanted one too, I didn’t pressure him he asked, he ate just the cheese off of the sandwich but that was still a good thing, he drank his juice but didn’t want the bear yo-yo which was absolutely fine
When my mum came to pick him up she didn’t seem pleased but didn’t say anything at the time until later on when she messaged and said she was unhappy i took him out without her permission and the fact he ate food, she mentioned how overwhelmed he gets over people eating in places like cafes (he was fine and not overwhelmed or upset in anyway and then when we got back to the car he said his day was great), she said I shouldn’t have gone behind her back and that she was unhappy at me overstepping
I’m wondering if I did overstep? I feel like my mum is potentially holding him back but AIBU? and WIBU for taking him out?