Can I Be Arrested?

New boss was horrible. Hated me. Made my life difficult. Harassing and bullying. I filed a complaint with HR who said I needed to show proof, so I downloaded emails and other stuff that showed her hateful attitude towards me, and how she cut me out of my work projects. She fired me the following week. Now the company is threatening me with arrest and a lawsuit for "stealing proprietary data", in addition to the emails, that I downloaded work to do at home, unless I turn over all that I copied. I filed a complaint with the state EEOC office but my hearing isn't until May and all my proof will be gone. I feel like I am being blackmailed. I have tried to find an attorney but don't have the money. Suggestions welcome!