Dragons do go through a brumation, but you really need to make sure that's what it is. It is common for Dragons to have a problem with Coccidia also. They will slowly die if they have this problem. One of the symptoms is their eyes will start to sink in. You're really gonna need to keep an eye on this. You can try leaving the lights on longer to see if she snaps out of it, but if she is brumating she still may not.

Females will sometimes become lethargic if they have eggs. She may have unfertilized eggs in her also. It's very hard to say without seeing the animal in person, and BG is too far from AZ kiddo. Good luck and keep a close eye on her.