aio my bfs mum doesnt like me for some reason

okay so im not really sure how im meant to post this etc, but ive gone onto a burner account to do so since some people i know follow my main.

i (18f) have been dating this boy (18m) for a while now and ive been around to his house a fair bit and i assumed me and his mum had a good relationship but im only recently realising that i was wrong.

so basically i have an incredibly weak immune system and i always seem to catch whatever fucking illness is going around. at the moment ive got something which im suspecting is perhaps the flu? not sure so not like incredibly bad but i also had mono recently. so anyway my boyfriend was meant to be coming round to my house on friday night and he said his mum and him were going to the shop beferehand and he asked if i needed anything since he knew i was unwell. and i said well if youre coming round can you pick up some chicken and ill make dinner for you and can you get some vegetables so i can make chicken soup for myself, alongside some nurofen and migraine kool n soothes.
when he mentioned to his mum that when they were going to the shop for it she told him to fuck off, and that i just make him round around for me and that he does too much for me and i need to get up and do it all myself etc. and she ended up throwing a hissy fit about it and wouldnt let him go to the shops with her for it but then she picked up the stuff and wanted to bring it by my house and i said no, not after how she reacted to that. which i think is completely reasonable but i need other opinions because apparently i shouldve been the bigger person etc.

and in march, i got raped. and obviously i told my boyfriend about it and i asked him to come over after the police had been here because i really didnt want to be alone. and he asked if he could tell his mum something bad happened. and i said okay just dont tell her what it was because i dont really want everyone up in my business about it yk. and she ended up basically bullying him into telling her and he begged her to come and see me. and she said that i need to learn to cope woth things on my own and that i dont need him and ill be fine on my own. like i get its not the biggest deal ever but after having to basically relive it telling the police i couldve really used my boyfriend.
like i totally understand he still lives under her roof and stuff but i feel like shes like a third opinion in the relationship. like even when im with him she always like texts and calls him. and makes him walk the like 45 mins home to take the dog on a 10 min walk and then go back to mine bc she and his sister cba doing it.

i just feel like its all a bit ridiculous and i could really use another outsider opinion bc idk hoe to even bring it up bc its literally his mum.
any advice is appreciated!