How do I stop my sister from breaking into my room and stealing my belongings?

Anonymous
Me and my sister were very close when I lived on my own. She was a lot more respectful and I considered her my best friend. I'm trying to save money for a house now and moved back in with the rents. Now I'm becoming very miserable and want to get the f*** out asap!

The problem with my sister but she takes all my things without asking all the time.. constantly and doesn't give a flying f*** when I scream and yell at her about it.. I lock my room but she takes a credit card now and goes right in. I've tried two different doorknobs and nails but for some reason its still very easy for her to slide the credit card right through and open the door.

We have separate bathrooms and I will try to take a shower and realize that bitch took my shampoo conditioner and soap out of it. Everything I have in there is also now hers. I bought a digital thermometer and she lost it. So now when I move out Ill have to buy a new one. She takes all my tampons when she's on the rag so when it comes time for me to use them I have to go buy more!

I pay for all this stuff myself by the way. My sister is very very very spoiled by my parents and for years we have been treated very differently. I worked and felt bad taking all my parents hard earned money from them. I bought my own clothes, jewelry, beauty products. My princess sister takes tons and tons of money from my parents. They don't even have cable anymore! They constantly are sacrificing for her. And I mean, food, gas for her car, car insurance, cell phone, money for booze, beauty products, clothes, shoes anything and everything. Its insane.

Just because I moved back home doesn't mean that I didn't work hard for all my things. She now thinks since I'm there its a free for all. Anything I have is hers. I told her again and again to stop f***ing going in my room and taking my sh*t without asking. She replies with you take my stuff. Which is BS! I NEVER go in the bitches room ever! EVER! Because I genuinely have respect, guilt and a conscience. She has never once said she won't go back in my room or that she's sorry. Cause she really doesn't give a f***.

What should I do? Its getting out of hand. I'm thinking about buying a padlock for my room. I can't move out just yet.I was thinking about punching her in the face earlier but really held myself back. I'm about to go through her entire room right now when the bitch leaves and take back everything that belongs to me.
How do I stop my sister from breaking into my room and stealing my belongings?
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