She quickly, but neatly, writes down a list of about twenty herbs and other plants, with quantities needed per dose, before returning the list. A DC 15 Know: Nature or Craft: Alchemy will reveal that about half of these are illegal, primarily because they make such potent poisons. That said, this isn't an entirely lawful city, and a DC 15 Know: Local, or a DC 19 Diplomacy check will reveal locations that all of these items can be purchased, though there's a chance such purchases might draw attention.