How do i most efficiently transfer title of a property?

I purchased an investment property with my girlfriend. We broke up during the renovation. We added up all the money spent on both the purchase and repairs. I cut her a check for the entire amount she spent. Unfortunately I wrote up a quick contract which she signed agreeing to the terms. Contacting the title company she needed to sign another document and have it notarized to transfer her ownership. She won't sign over there property to me. Am I screwed?