The character for Myshka is intended to be a response to the following challenge: "The catgirls should be feline in ways other than those that suit their sexuality. In other words, they don't just chase string because it's cute to see them chase string-- they chase string because they're cats. Same goes for purring, stretching, and any other cute/sexy things they may happen to do. They get to be actually feline because that's who they are, and not only feline for fanservicey purposes."
The Henshin rod is marked "H" for a reason. It doesn't stand for "Henshin".