There is one thing I always found implausible about this story.
Cat girl--fine. Is the mistress' maid and they are fond of each other and have sexy times, sure.
Cat girl takes her job seriously and works hard . . . wait, what?! Has Zanka ever met a cat?
A "real" catgirl would just ignore you all day, until she wanted pats, then freak out and scratch the hell out of you, when she decided she had enough.
Then, she would stick her butt in your face when you were trying to sleep. I can imagine Zanka writing one like that.