I am so sick of it.

Why am I the only one who bathes her, cleans her poop/pee, washes her stuff. She is way too heavy for me to lift, it is super hard to even get to the toilet. Her skin gets diaper rash. The sweat and smell.
I can’t have my morning in peace and quiet. I can’t have a peaceful nights of sleep. She has to pee. Someone has to hold her so she doesn’t fall. Now she can’t even wipe. I am so sick of this. The house is dirty and smells disgusting even after cleaning. I just wanna set everything on fire. I hate living like this. I hate that she didn’t took care of her and put herself in this situation. She had her life when she was my age but I am stuck. I am stuck and I want it to end. God this rage I feel inside of me. I can’t stop it. Nothing helps and no one cares. It is just too sad and depressing.