Was she an import or captive bred? The ASF references are kind of pointing to import...When did you get her and what was she eating prior to you getting her? How long have you had her?

I would really stick to either mice or rats and try all the different methods of feeding...i.e. putting her in a paper bag over night with f/t prey, late night feeding, different substrate, live vs f/t...etc. This is a fairly common problem so there's tons of feeding advise on the net for Balls...

Also, it's not unusual to go off feed this time of year...