<human>: Can you summarize the given text in a few sentences?

Hi everyone,

For years now, my sister has been breaking into my room and stealing my belongings. Typical, right? I thought that once I got a lock for my door that she would stop, but I've continued to have things missing from me time and time again. 

My parents don't/can't do anything about her behaviour, which is totally inappropriate towards them as well (screaming, swearing, violence). So even if they sat her down and talked to her about it, it wouldn't help...it seems nothing gets through her head.

Anyways, I was just wondering what more I can do to keep her out of my room. She's super sneaky, I have to lock my room just to go to the bathroom or eat or something. Even if I'm right outside my bedroom I have to lock it, because if she has the smallest opportunity she'll take it.

I would like to add that I do not steal from her, unless taking back my own possessions counts...she just loves to steal from me (and my other sister, too).

I go out a lot, so I'm also looking for a method that will prevent her from breaking in but not harm me when I come back. I realize this provides a large timeframe for her to break in, but I'm not going to stop living my life because she's a brat.

Please help, I'm tired of having my items stolen.
<bot>: My sister continuously steals my belongings, even though I have installed a lock on my bedroom door and use it religiously. What more can I do to stop this nonsense?