Boyfriend Hit Me And Is Now Suing Me

Hi Reddit, long time lurker, but this is my very first post. I wish it was under better circumstances, whew, here it goes. I dated a man we will call him Man for the purposes of privacy in this post. Man and I dated for almost two years. During that time he was on Heroin and trying to hide it. As someone fairly unfamiliar with drugs, I didn't recognize all the obvious signs until I loved him. He love bombed me at first and I was elated. but then it got bad with a lot of him screaming at me, blocking me from leaving when I was scared and wanted to leave, he even broke my door down trying to get to me (police report filed). I finally got the courage up and I kicked him out because I didn't feel safe anymore. shortly after we broke up we met up and had sex. during that time while he was inside me he hit me in the face leaving significant bruising and a lot of pain and trauma. I filed a police report but didn't press charges. I was confused and felt ashamed. This event caused me to miss a lot of school while I was trying to heal both emotionally and physically, After he started reaching out to my family and friends, I decided it was time to pursue a restraining order. I went through the process and filed, and I got a court date. On the day of the trial, I was there with my advocate and supporting family. I didn't hear the call for the court opening and because he has a name with many A's I missed the hearing because of 6 minutes. I was crushed, I tried to refile but because he had paid for a lawyer and I just had myself, the case was dismissed "with prejudice". my refiling was rejected and I gave up on getting my justice. He had hit me and gotten away with it. it hurt but I was trying to focus on school and it was hard. two weeks ago my windshield was broken out in front of my house (no cameras). This Thursday I got the dreaded manila envelope. He's suing me for lawyer's fees to the tune of $2500. I don't know what to do. I just can't afford a lawyer. I have my advocate, so hopefully they can help. I received the paperwork the same day I was accepted to the local university. I don't even know where to start, and I'm terrified I am going to owe the man who abused me $2500. I am hoping someone here can give me some advice? Somewhere to start off defending myself. It's finals week and I'm already not sleeping or eating. Am I screwed? I can't imagine having to pay this when I don't have a job. If anyone has any experience in domestic abuse cases, I could use some help. Thank you for always being a wonderful community and if you have gotten this far, just know I deeply appreciate you taking the time to read this. Have the best holidays guys. I'm sure I left things out and had some grammatical errors. Please be gentle. Thank you for your time.