90 for the basking spot and 70 for the cool area are quite low for a beardie. Bearded Dragons live in the dessert, where temperatures reach up to 100 degrees Fahrenheit. 100 degrees for the basking spot and 80-85 for the cool area is a good temperature. You said you feed her twice a day? Maybe that's the reason. You feed her too much so she's never really hungry, and the only reason she eats crickets with calcium is because they have to have it to survive. I feed my beardie Mystic crickets every Monday and Thursday, I feed him veggies and berries every Sunday, Wednesday, and Saturday, and give him his food pellets every Friday. If she eats too many crickets not only will she never be very hungry but she's also getting a bad diet. Beardies need to have 60-70% veggies and berries, 10-20% crickets and other insects, and of course food pellets and occasional treats to make it a 100% complete diet. But there are some veggies that beardies can't eat, so It's good to look up a good list of veggies and berries that a bearded dragon can have. Also make sure to look up a list of treats for you beardie. A great brand of diet pellets I would recommend is "All Living Things", which you can find in stores like Pet Smart and Petco. Make sure that she's getting her correct diet, because that might be the reason, okay?