I dunno, 17 is past the prime for nekos, so it might only be 2. The decider will fall down to how good she looks in a maid costume, I reckon. It usually does.
Also I had an idea. What if Kit got harassed by some delinquents and Ayumi comes rescue her? Seems to me Kit is the ideal target for delinquents, so she'd benefit from a personal bodyguard :P