Should I get an attorney and pursue a lawsuit for assault/lying/pain and suffering?

I met my roommates on craigslist. The situation was bizarre from the start but I moved from Seattle to Boston for school. As our situation progresses, it turned to assault one night. She grabbed me and pushed me. I filed a police report, got medical confirmation of whiplash and spoke to the landlords to see about possible other living situations. I didn't feel safe, she would watch me any time I was in the kitchen, standing at the door just staring, following me around etc. every time I left I felt like I had to set up a security camera. I hated leaving because of fear she would harm my stuff and I hated being there for fear of her hurting me. I missed school because of it. After calling the landlords, I found out our lease was illegal (we were subletting and didn't know it was illegal). Everyone was evicted with a 7 day eviction notice and I didn't have money for a new first, last and deposit with a new lease. I talked to the school, explained the situation and they let me leave on medical conditions. Because of this girl I lost $11,000 in tuition and the cost of moving out back to Seattle to recoup from the situation. I also have medical bills and so many things that I've had to pay for because she's been so intimidating. I need legal advice, there is a lot more to the story but I think I may be able to take this to a court. I have police reports, doctors notes, school counseling notes and agreements, witnesses to the intimidation, videos of the surveillance I felt like I needed. I documented everything very well.