Hi and welcome!

Here’s what you need to do today as soon as a possible. Get a plastic bin, plant pot or whatever you have around that is at least 10x10x10” or somewhere close to that. Get some (preferably) play sand or even potting soil and put it in the bin at least 6-8” deep. Not coco coir! Moisten it all until it is wet enough to hold a tunnel without collapsing. Put that in your enclosure, loosely wrap a light sheet just around the sides that you are visible to her and then wait. Hopefully the disturbance of putting a lay bin in won’t deter her and she’ll go right to it. If she sees you watching, she won’t lay. Don’t worry about feeding her and keep your lights at their regular schedule. For hydration you could use a dripper (just not directly over the bin). If you don’t have a dripper, you can make one with a plastic or foam cup and poke a hole in the bottom with a thumbtack. The laying process from start to finish can take a couple of days and she may even sleep in her hole. Some dig multiple holes until they find one they like. I cut out little holes I can peek thru to monitor my ladies. You’ll know she’s done when she’s covered her hole and sitting in her basking area, looking dirty and much thinner.
I would suggest you have a husbandry review done just to make sure all is correct. Also, we can help advise on how to reduce the frequency and/or number of eggs laid, which will prolong your lady’s life. Any questions, ask away!