Man, it sure has been a while huh? I don't know if you'll even see this Mat, but I'm really hoping for some kind of update. I don't mean updating the game, but giving us an idea of how you're doing and when you think you'll be working on this game again. I'm not trying to rush you, it would just be nice if you could communicate with us a bit more.
Since I'm here, I think I'll suggest another character: Nicole from The Amazing World of Gumball.

She's a blue cat and mother of 2, she has a nurturing personality but can also have a short temper. I'm not sure if you'd want to add her on account of probably never knowing about the show, but I'd personally like it and the game doesn't have any cat-women as far as I remember. Maybe she could fill that gap? She's also a more cartoony looking character, something the game lacks at the moment. I doubt you could make a level based around her, so you could just have her be an optional character you can buy from the pet store. The actual cartoon doesn't show her in much detail, so you could refer to pictures like this for how to make her look:

She'll probably have smaller boobs though, in the cartoon she looks to be more or less flat-chested, but how big they are is up to you. You probably won't consider adding her, but I wanted to just give an idea. Good luck with whatever you're working on right now.