“You’re forgetting something,” says the witch serenely “I am a shopkeeper. I reserve the right to refuse service to anyone i find… distasteful.”

“I know you have what I want,” hisses the… being “You will sell it to me.”

“Hm.” sniffs the witch “Sure, okay. That sounds like something I would do, [name]. Oh, you look surprised?” the witch grins “Did you not expect me to know who you are?”