"That's exactly what I've been looking for." Debi lightly ran her fingertips over the spine of Everyday Spells and Potions: A Practical Guide. "I'm not sure what happened, but I didn't find out about magic until about two years ago. Thank you."
She added Everyday Spells to her basket, hesitated, then tossed in Defense for Beginners and You're Not A Dunderhead: Potion Brewing for Adults. Even if she couldn't brew her own drugs, maybe she'd at least be able to figure out what the Snapes were talking about when they discussed their new product line in front of her.
"This should do for now. I'll definitely be in touch about the book - here's my contact information." She pulled out one of her business cards as Padma led the way to the till, dropped her purchases on the counter, and scribbled her Floo connection on the back. "I'm so glad I came in!"