OMAHA, Neb. (AP) — An Omaha woman who’s been fighting a rare cancer says she’s now battling the Internal Revenue Service, which says she owes nearly $15,500 in taxes on donations

Doctors found tumors throughout Casey Charf’s body when they were searching for injuries she suffered in a 2013 accident. People who learned of her plight through the GoFundMe website contributed nearly $50,000 to help pay her medical expenses.

But the 20-year-old Charf said the IRS notified the Charf family last month that the nearly $50,000 collected through GoFundMe should’ve been claimed as income. The IRS wants more than $19,100 in back taxes, penalties and interest.

A tax expert told the station that the donations are gifts that shouldn’t be taxed. The IRS declined to discuss the case.