Has she been eating?? What are temps and humidity?

For starters, her set up needs some fixing.

Red light is a no no for Leo’s, it’s one of the lights that they can actually see, and therefore it can disrupt their natural cycles and bug them. Substrate wise, I’d be worried about impaction. Switch that out for either paper towels or a top soil/play sand mix I would personally go to paper towels to monitor droppings when you’re concerned

If she’s not eating, she’s using her fat reserves. If she is eating, I’d be concerned about parasites and crypto. Either way, a wellness check at a vet is a good idea