Lisa didn't particularly mind that Michael invited himself to join her. Though slightly irritated he took it upon himself to read over her shoulder the girl didn't lash out at him immediately for it. Instead she seemed entirely comfortable explaining it to him as the new comer helped himself to a seat.
"I'm thinking about revamping my blemish-be-gone cream," she said simply. Expecting Michael to know full well what she was talking about. Looking over her notes she said with a smirk, "And considering Padma had a fit the last time I tried to pay a second year to test my products on...a gnome will have to do." Looking to Michael she added with a grin, "Unless you want to volunteer?"
She'd distinctly left out the information regarding the curious little hex she'd found in the library a few days ago. She figured at that point in time... it wasn't exactly important.