older beardie laying eggs

[Zoey]

Once again Loki has been digging up the shrubbery in my backyard. Very similar behavior to last July.

See previous post...
viewtopic.php?f=4&t=129686

This time I'm concerned because she is an older beardie and she seem to be wearing herself out trying to dig a tunnel to China! This has been going on all week. I will get home from work, take her out of her enclosure and put her in the backyard. She will run to one particular corner and proceed to dig, dig and dig!

I had all day yesterday off work and today, and she's been spending most of her outside digging her tunnel. I take her inside every few hours to warm up under her heat lamp and take some drops of water to rehydrate.

I'm concerned she's not going to lay these (infertile) eggs at all! How long should this take? I've tried putting a laybox in her enclosure while I am at work, but she ignores it. She is determined to dig that hole! I am just so concerned because she seems to be so exhausted after a couple hours of digging. I will pick her up and she is just limp! She seems miserable! Any advice on how to move things along?