Sharing a room?

DISCLAIMER: MOVING OUT isn't AN OPTION. I DONT HAVE A STEADY JOB AND AM IN CALIFORNIA (RIDICULOUS PRICES)

I (27F) share a room with my sister (31F). I have never had my own room. Have never had privacy. I would shower with her until I advocated at 8yrs old. Even then she'd sit on the toilet talking to me until my parents scolded her. After that id go to the room to change and I feel she'd run it to just watch me change. So I started changing in the restroom. She still has that habit of running in anytime I'm in the room alone.

I legit have no privacy anywhere I go she follows. If im in here, she's here. If im in the living room, follows. The restroom is the only place I have privacy. In the room she always sits facing me. I hate that I am always the one to have to sit different or turn my body to not look at her. I am to the point that I use school or work to my advantage to get my alone time. I legit sit in the car to feel my sense of space. But when I come home she's complaining to my parents that work is taking advantage of me or that im out doing drugs or meeting guys. She has this crazy mentality to her and always assumes the worst in me. I feel she's made it unlivable. Any advice?

Sharing a room?
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