"Then well met, Crookshanks. And you as well, Hermione Jean Granger." What a long name. And no title to shorten it to. Faris isn't familiar with human naming conventions and whether they might have a familiar form of address; his temporary human host had only one name, and the other human he's had recent contact with appears to have four, as well as a rank. Better to use all three of her names until she indicates he should do otherwise.