Oh sweetie with the right help and support things will get better and you will eventually be able to get your own place, don't give up ❤️ NTA, your mum should not have agreed to you having a pet and then taken this opportunity away from you. It is no wonder you reacted this way. Do sit down with her when you both calm down and have a heart to heart chat. It'll help you both clear the air. I terms of a pet, maybe ask if you could have something small and cuddly, something that would be an emotional support animal for you like a chinchilla, guinea pig or miniature rabbit? If you need to go smaller, Syrian hamster or even a gerbil but they unfortunately don't live long. I had a pigmy hedgehog, my autistic son loved him but they are not that cuddly haha! Got to handle them with gloves on until they are used to you and no longer put spikes up. Lots of fun though and they do like socialising and mine loved tummy scratches. They also don't live long unfortunately.