Edit: I realize I forgot to add how I’ve been petty to her back in this so it’s now added to give a better understanding from both sides.

Edit2: I see people are saying get her evicted and ask her to leave and such. We are living in a 2 bedroom apt. where all of us are on the lease and we are currently getting ready to leave at the end of this month to a new house, so those options are already being acted upon. We just want our shit back, but we know the moment we call the police to get our things back from her, the last of this month will be even more hell because she’s just an evil vindictive person.

Hey guys so for some context me (24m) and my girlfriend (24f) have been living with our roommate 26F, (For privacy we’ll refer to her as AssFace (AF) for the rest of the story.) for about 6 months now but the real problems started about 3 months ago. We first moved in and everything was fine apart from some standard disliking of the other persons routines such as me and my gf did not like how little AF would clean up her messes in the common areas or the back porch especially because she has a dog who poops and pees out on the porch and then walks around in it and tracks it right back into the house so we just don’t go down into AF’s area (even though it’s supposed to be everyone’s) unless to go into the kitchen and cook ourselves dinner. No big deal. But then the fun started 3 months later when she started slamming the front door every single morning at 630 AM. After about a week of this we were fed up with how she keeps doing this is as once I’m up it’s hard for me to go back to sleep and it sets off the 2 cats me and my gf have into zoomies mode for hours making sleep even more impossible. So we very politely asked and explained what the door slamming causes and we were met with a that not my problem. We were highly put off that AF would be so disrespectful to us in our shared living space but tried to remain civil for the remainder of our time together until she started using all of our things in extreme excess. Whole bottles of detergent gone in 2 weeks that used to last months, toilet paper being gone within hours of it being put out, paper towels being taken and hoarded into AF’s room, we had finally reached our civility last straw. We’ve now started keeping all of our TP and paper towels and everything in our room to prevent this kind of behavior. As well as started to slam the door back on her when she has her days off and me and my gf are having to wake up for work. AF’s response? To take every plate, bowl, knife, spoon and fork and hide them in her room. As well as take some of our own things and hide them in her room and is now refusing to admit that she has them even though both me and my gf know that there’s no other place to have them be. I’ve personally reached my last straw with this taking my things crap and am about to to call the cops on my own roommate to force her to open everything and prove she has nothing of ours. AITA if I continue my pettiness as I’m planning on going much further if this continues. IE bleach in the detergent, covering paper towels and TP in itching powder, only things we personally own that she shouldn’t be using already since we kindly asked her to stop using our things.