My girlfriend recently moved in with me. Before, she was living with her friend, D, as a tenant with some kind of agreement to rent and utilities through text. D had recently bought a house and started renovating it. The renovations stopped about 2 months into ownership and she left the house in shambles. She stopped taking care of things, and she took in other roommates who followed her bad habits. Dirty, moldy dishes in the sink with backed up plumbing that didn't work... she puked in the bathtub and didn't clean it up for days, her pet cat peed and pooped everywhere and she didn't clean it up. My girlfriend was spending most of time at my place, so it didn't bother her too much at first, but when D puked in the bathtub, that was it. My girlfriend cleaned all the dishes in the bathtub, and after that, D said she was going to charge everybody money to have a plumber come out and fix it. My girlfriend didn't agree to that because she didn't contribute to the problem, and despite that, she cleaned up the mess anyway. I went over there and fixed the plumbing myself and asked for $30. D did not pay me. So my girlfriend decided to stop paying rent in/for November due to the unlivable conditions experienced, and she moved out on November 14th. D went through her stuff and found out she was packing, and locked her out of the house. We had to contact law enforcement to get the rest of her belongings. Afterward, D started harassing through text by saying she has some of her possessions and will not give them to her unless she pays the rent owed. She has been texting quite a bit ever since this happened, and today I got a text message from her saying she wants to let us both know she is filing for small claims court! I'm thinking GOOD because I don't think she has a chance and the matters were handled illegally in a number of ways. I tried to summarize everything while providing the necessary details. Based off what I shared here, under the presumption that my girlfriend has screenshots of text messages as proof, what are the chances that this will play off in her favor? What are some tips on organizing and prepping for small claims? Neither she nor I have ever been to court. I think my girlfriend should countersue, because she would have preferred to continue living there, but she had to move in with me, and she had to front the cost of a deposit, background check, etc. Is this a good idea?