Test your powers out and Charm her

You let the cold kernel of power in your heart liquefy and flow through the pattern of the spell. You say a word and make a gesture from your eyes to hers, and a Magic Bean is gone.

But you've traded it for something. Lisa is looking at you with weird, frozen intensity.

And then she gets up, walks around you, and starts slowly stroking your hair. "Poor baby. You must have been scared." She's barely ever had any physical contact with you. Actively avoided it, in fact. She's like that with all men, other than (presumably) her boyfriend, and you can't take it personally. This is a wholly new phenomenon.

This magic you're using is definitely real, and definitely strong stuff.