Try to scare the priestess off.

"What's your name?"

"Lilania," says the priestess. "And what is yours, traveller?"

"That doesn't matter right now. The important thing, Lilania, is that you're going to get out of my way right now."

"And why would I do that?"

"Because I think you're going to want these back." You raise your hand to show her a pair of prim, sensible, high-waisted cotton knickers, which until a second ago were covering her pert slender bottom. Twin roses of shame bloom in her pale cheeks as she feels the cool air whistle between her naked legs. "Nice sensible underpants for a nice sensible girl. And you know what a sensible girl would do now? She'd run away."

"I see," said Lilania coldly. Her face sets into a mask of determination, and she whips out the holy symbol that hangs on a chain around her neck. "You serve the Blazing Lady. Begone! Foul warlock! Sorcerer! Consorter with devil-things and creatures of darkness! Get back! My faith defends me from your powers!"

"No it doesn't."

She slaps you in the face, breathing heavily. "Cower before me, beast! I will vanquish you! I will exorcise the spirits that command you!"

Your face stings slightly. You rub it, looking thoughtful. "I don't think you will, but if that's the way you want to play it..."