Um... [He doesn't know how to react to the love potion thing, because while he'd normally dismiss it as just banter or flirting, the hasty way she changes topic says plenty on its own.

But they are getting to the edge of the forest, and the brightening sunlight is just making him squint and rub at his eyes again, so her distraction is a success.]

Assuming I didn't completely misread the book, it's called an ealmanth flower. It's not too rare, so they should know how to deal with it.