<prompt> Human: My SO filed for a tax return. It somehow got mailed to her aunt and she cashed it and spent it. The aunt said she would pay it back though. What should my GF do? Is this illegal? How can you cash a check in someone elses name?  <response>: Is stealing someones money illegal? Yes.How could she have cashed it? Forged signature maybe.What should she do? File a police report andor small claims court. 