Just to be clear on the type of enclosure I would expect from this outlay it is similar to this;


A full depth tank with a substrate - burrow in either breeze block or similar, cored out for a burrow down to a moist sustrate, supported safely so they can't dig under it, and a sufficient surface are on top for them to choose. Hard to build but the best you can probably make for her.

There was a picture of this setup I remember from my yoof but it seems to have disappeard along with my hopes and dreams.