I would say try a live ASF like one suggested, also bump up her hot spot to around 92-95 degrees and also the ambient temps if you can. If your RH% has dropped during the winter months like mine has also you may want to move the water bowl closer to our heat source to bump that up. I have a tiny het pied male that didn't eat for the first 3-4 weeks after receiving him, a live ASF did the job for me...he is now putting on weight eating rat pups.