my ball went opaque a few days ago, and i noticed that her skin is really loose. it doesn't look like it is the old skin that is loosening up. i guess it kind of looks like she got really stretched out and then never tightened up again. she's 23" with a 1.25" girth, and weighs 199g. she eats a small, small rat every week with no problem. is her skin very loose just because she is getting ready to shed?