good looking pair.. but i definitely would not leave those two together that long, especially without watching them.. a picture of them together occasionally is fine but definitely no housing together.
Unless your goal is breeding, never leave them together, especially unsupervised.
I wouldn't leave them together at all. Not even for a short period of supervised time. The male could easily try to eat the female and kill and/or consume her. I have seen an adult male eat another chameleon of a much larger size than your little girl. Even if you don't think it could happen or you could stop it from happening, it only takes a split second for him to shoot his tongue and bite her hard enough to severely would or kill her.