i struggle w my best friend being autistic even tho we r both autistic

hey, me and my bestfriend are both autistic and are both level 2 diagnosed were in sped education. but im really struggling with her needs and habits atm she stims constantly and vocally and sometimes it bothers me when were out in public she also has extremely bad hygiene only showering once every 2 weeks when shes on her period she doesnt change her pad for days on end so she stinks of blood and she wont wear deodorant either ik it isnt a sensory issue shes just lazy as fuck, shes overweight for her age and eats so much she will eat a lunch from the school canteen and her food out her lunchbox she has tantrums like a 5 year old when her mum wont let her have 10 cans of monster a day and 40 chocolate bars then complains shes gaining weight 💀.. shes so affectionate to constantly wanting me to lay on top of her for deep pressure and she always wants hugs and she lays her head on me all the time but due to my asd i struggle with touch and hate it because im a germaphobe and she touchs me it sends me into panic if i try telling her how concerned i am for her psychical wellbeing she cries apologies 4000 times which pisses me off so much she will not listen to my boundaries and she keeps trying to push lesbain stuff onto me since shes gay, i am apart of lgbtq community but she tries to force me to like girls even tho im straight. i need advice on how to deal with her because im gonna snap one day with her gross habits and her childish nature shes bratty asf i dont wanna stop being friends w her and i feel bad sayyng all this but she needs help. also im 13 shes 15 so her being overlly sexually and oversharing stuff i dont want to know is really uncomfortable for me Edit: she also led me on and made up lies that the boy i liked liked me back when he actually was gay. she lies alot