I hate my family

TW: threats possible abuse psych ward mentions medicine mentions

To start this is big for me because I have adhd and possible (HIGHLY likely) autism I haven't been diagnosed with autism but I have with adhd. Yesterday a package came for me it was a gudetama stress toy that threw up slime. I had accidently left it downstairs it was fine and in perfect condition when I left it (I forget things often due to adhd) today I learned my sister played with it when I had left it don't know when but she got it filthy and you can't clean slime.

For context my sister is almost 20 still in high school and hasn't been actually punished in years she doesn't do her school work and got kicked out right before graduation because of it because she's always on a device. She's snippy rude and verbally (sometimes physically to me) abusive. She constantly threatens to kill and harm me and often yells over stupid things.

Now I HATE others touching my things and moving them let alone ruining them I can't stand it I feel violated (if that makes sense) when that happens (btw my sister never gets grounded even when she hits me or throws things at me or threatens me she never gets in trouble and I've felt unsafe enough where I would have to grab knives because of her) so I blew up when I found out and demanded her to be grounded ( I know it was childish ) but she said that "she has adhd which makes her curious and has to touch things" and my grandma wouldn't Ground her or let my mom Ground her and I feel like no one ever listens to me or cares about me and how I feel only my sister and how she feels I'm always their scape goat and I'm always fighting with them and being yelled at.

I tried to explain to them how I felt and articulated my words to the best of my ability but they won't listen and I don't know what to do I often flinch if I think someone's gonna hit me or stuff at me and I'm just so tired and sick of this. I feel like if I blow up or get upset I'm in trouble and I'm wrong and I should calm down cus it's not a big deal, but if she yells at them for them even calling her name

I also feel neglected my mother is always on her devices and gets mad at me when I want her attention (it's always been like this) she's bipolar and often blows up on me or makes me deal with her mood swings they always bring me into money issues or talks about them around me she won't get off work for appointments or councilor she won't take me to counciling because "it doesn't work" even though I need it due to stress she won't get me into a med doctor (I have severe anxitey a mood disorder and sleep problems that I needed to take meds for) I haven't been to the doctor in 2 years dentis in over 5 And everyone uses me as their therapist and are always venting to me and dumping problems onto me I can't take it anymore.

My mother often uses my physc ward visit against me and guilts me often. I'm just so so tired and I wish I could get out. they never respect my boundaries of not wanting anything to do with bills or rantings and guilt me when I try to enforce said boundaries I've been doing this since I was 6. I feel like an adult and I'm so tired of it I don't know what to do.

Sorry for such a Long rant and sorry for alot of text any advice would be appreciated