Along her way back to town our heroine spotted a washed up slaughterfish on the muddy stream bank. A few rocks thrown at the fish confirmed that it was long dead. Another lesson from her thieving days was that a majority of the merchants she robbed carried slaughterfish scales for some reason.
Seizing the opportunity, she took out her dagger, and proceeded to descale the dead fish. These things must be worth something if so many traveling merchants carried them, right?