Hi - no problem on repeated questions ESPECIALLY where their current health is concerned. First I have two questions: was she bred or are these infertile and you have substrate on the bottom of the cage? Typically that causes more problem and generally it is suggested not to use any, but we can discuss that later.
She is stayting at the bottom of the cage because she needs to lay not b/c she can't climb. The fact that she had herself in the soil definitely says she is ready to lay and you want to provide her with the proper setup ASAP. The "tub" am referring to is her laying tub. It should be deeper than she is long b/c she will dig deep. I used a large plastic plant pot. (I use a mix of coco-fiber (the packed together bricks that expand in water that is used for substrate) and builder's or "play" sand which you can pick up at home depot for a few dollars. If you do not have the coco on hand use peat moss or whatever you have - no time to waste - the setup you have will probably be fine this time around. It should be moist but not wet. gently pat it down as you would when repotting a plant then stick your finger in all the way to see if it holds it shape - the idea is for it not to collapse in on her while digging. You do not want to delay this b/c if she does not have an appropriate place she may become eggbound. Once you have it setup put her directly in it so she knows it is there. Some folks begin to dig a hole to get her started. You may want to put a basking light on it for a little while to warm it and her up unless your temps are good.
Once she begins to dig she will probably spend the night in there and will come out sometime the next day. As tempting as it is to check on her it is best toleave her alone once you know she has begun to dig. I put a large towel over her cage so she has complete privacy and minimal stress. Once she is done she will look like a skinny neglected animal and wuill have a HUGE appetite so feel free to fatten her up for awhile.
btw, have you been giving her supplemental calcium during htis time?
Sorry so long but I wanted to cover everything since her time is imminent!
Also, did you look in the dirt she spent the night in to see if she did deposit any? These pics show the tub and her (yes, her tail looks short b/c it is
and what she looked like the day after laying 42 eggs!


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0.1 veiled - Luna
0.2 house geckos - Gaia & Tia (both MIA 
0.2 felines - Kyndra and Líta
1.0 African Clawed Frog (for summer)
0.5 Mad. Hissers (for summer - all girls, no little ones, whew!)