Roommate trouble

I’m not here to really ask for advice, just here to vent. So I have a friend of mine staying with me and my fiancé. She was living at a friends parents house until late November when she woke up to a note asking her to move out in mid December with only a two week notice. Before this friend lived with us, my fiancés friend lived with us for a year and before that it was just us so we were pretty excited to live alone again after he moved out but then this happened with our other friend and she called me crying asking if she can stay with us. My fiancé and I told her only if she understood it was temporary (2-3 months tops) she could move in. She said she understood and we had her move in date scheduled for her here. Before she even moved in she was asking us to help her pack all of her things and move it, including her car that isn’t running that we had to rent a trailer to tow here that she never paid us back for. Almost immediately after moving in she started asking me for rides everywhere, promising me gas money that I never got, demanding that I take her when she wants and not when it’s also convenient for me, etc. I finally had to tell her she needs to figure out another ride situation because my car cannot handle all the extra miles being put on it. And then she borrowed a friends car but a few days got mad at them and gave them the car with her keys back with MY HOUSE KEY on it still. And she left it up to us to get it back from her friend. Then not even a week later she brings a random guy into our home at 3 in the morning because she wanted a “dick appointment”. I told her that was in no way acceptable to allow strangers into our home without asking us since we didn’t even know her boyfriend was here until the next morning when we came outside to see his car blocking our driveway. She then proceeds to tell me he Carry’s and brought a firearm into my home. I have no issue with carrying but I do have an issue with strangers carrying in my home because you never know who someone is or their intentions. That turned into a blowout fight between me and her because she genuinely saw nothing wrong with the situation and started calling us controlling. I reminded her we are renting her a room for at least 1/3 of the price of rooms usually rented out and that she can’t just do whatever she wants in our home.

Fast forward a week later and she brings that guy back into our home in the middle of the night. At this point my fiancé was ready to kick her out right then but I told him we have to at least give her 30 days so he told her she needs to be out March 1st. She tried to argue with him and say she would pay him for a whole month if she could just stay till March 15th. He told her he isn’t interested in her money and he was trying to be nice and help her out and she took advantage so he wants her out March 1st and she said she understood and would be out March 1st. And then I found out the guy friend of hers who is currently letting her borrow his car, she’s having a thing with him. So she’s leading him on so she can use his car and sleeping with this other guy. And since we told her the move out deadline she has become even more combative and unappreciative of what we do for her. We had guests over this past weekend who ate some of her food in the fridge which would piss me off too so I get it but she started accusing me and my fiancé of eating it and then saying we fucked her over and left her nothing to eat. I told her for one we didn’t fuck anybody over or eat her food and for two she needs to watch what she’s saying to and about the people who are literally standing between her and having no place to live. We are completely understanding of mental illness and having episodes but this girl has done nothing but disrespect and take advantage of us starting before she even moved in. Not to mention has the actual audacity to get pissed off at us and treat us some type of way when we tell her what is and isn’t going to be going on in our home. I’m so close to just kicking her out and showing her how not nice we really can be. Not to mention she’s a bridesmaid in my wedding and she hasn’t even gotten her dress yet despite the wedding being in a short few months. In June 2021 I gave all my girls a deadline of December 31 2021 and she has had the money because I watched her spend over $600 at the mall on Christmas presents for all her friends and I continue to watch her buy stuff and go out drinking and she will even come home and show me the things she’s bought after telling me she can’t afford her $90 bridesmaid dress, so it’s clear she’s able to buy it, she’s just not prioritizing it. So I’m probably gonna have to cut her from my wedding as well. My fiancé grew up with her in his friend group and his parents also know her and everyone has basically told me she’s a lost cause who takes advantage of everyone. I really wanted to help her out, but she’s just straight up ungrateful and I can’t help her anymore.