Yes, he saw her collection of alchemical plants. With the nirnroot purchased, he's looking over the rest, examining them with his nose as well as his eyes. "I will happily share my findings," he promises, "for some of these seem different as well. Intriguing."

Her point about the merchant's study is well-taken, and he bows to accede to it. "Fairly said. I must accord you the mastery of your trade, at least, that I have managed of mine. Probably more, as I imagine you have had more opportunity for focus."