No, not legally. That's not to say she can't try to forge various documents, like your signature on a quitclaim deed to her or other documents showing a transfer of ownership, since almost anyone can *try* to forge whatever documents they want, but if she did this, with your testimony to the contrary and an absence of any other evidence (such as evidence that you were paid for your land) supporting their claim, it is almost impossible to imagine she'd succeed. If she attempted to do this, you'd go to court if necessary and prove it was a forgery or other "theft by paperwork"; you get a court order voiding whatever was done, be able to sue her for compensation, and also could file charges. Your survey by itself conveys no rights on her to the land.