Both are classic cases of letting ones guard down because of her nature and appearance. If a killing intent was Cirno's deal, you'd be dead TWICE now, Aya! Can't mess with the strongest.
Which reminds meYou of course, Aya!blushhhhhhhhhIt's finished!We did iiiiiiiit!who are you giving this to, Cirno-san...?That was lovely, Cirno-san.Yeah!