Interesting turn of events. I was just getting used to a polite Cirno. Still a bit stubborn though. Either way, it's really refreshing to see a not-so-dumb depiction of Cirno.
I don't know if I'm more astounded that Cirno had the foresight to bring a frog along with her for this reason in the first place. Or that she remembered Suwako's name and found out where she lived from the human village while getting the directions correct.