[mangoandmimi]

To be honest it all sounds fairly typical of a young and active female. You just have to work with them really and do the best you can. From my experience with hyperactive hams, a detolf would be my bare minimum for keeping one in, lots will want more room than it can offer. A cage setup may help although when they start chewing like that it is difficult to break the habit. I wouldn't wait around for her to calm down with age as plenty remain that way until over 1.5 years old. Has she got deep bedding? That would be essential at least in one end of the detolf.

The ball really isn't the best option, no matter how active she is it doesn't change the fact that they're just not safe and will likely still stress her out. Biting and scratching at the ball seems more like a sign that she doesn't enjoy it in there. Where have you tried free ranging her? Most seem to enjoy it but maybe the area is too open or something.