A mother says she will ask police to find the woman who she believes scammed her dying son.

Thomas Doty, 20, of Washington state, died on Dec. 19 after a three-year battle with bone cancer -- but not before a woman apparently scammed him and his family into believing a check for $250,000 was on the way.

Family friend Jonathan Hillstrand, star of the show "Deadliest Catch," made a video asking for support for Doty. A woman claiming to be a nurse in Indiana soon promised $250,000 to send him to San Diego, pay for experimental cancer treatments, and help the family save their house after the expense of caring for their son.

"This huge yellow bouquet of flowers showed up, [with a note] saying, 'No more worries,'" Tiffany Doty, Thomas's mother, told ABC News. "She sent me a text and an email, and it all started, saying, 'I saw your story, and my heart breaks, and I'm going to pay for all this treatment.'"