But the response from her sign provides new hope.
The Pens fan said she's received hundreds of messages since the sign went viral, including several from people willing to be donors.
"Many of them have said, 'What do I need to do?' It’s a feeling I can’t really describe," she said.
Instead of calling the number on her sign, Sowatsky asks that potential donors contact Johns Hopkins and provide her name. You can also direct questions to 410-614-9345.