Give her some time. My haplopelma lividum, which are known for their giant burrows, took about a month before finally settling in. She cowered in a corner for the longest time. What might help (it helps some tarantulas but not always), is to give her a bit of a pre-made burrow. I used a paper towel tube and shoved about half of it into the dirt, then removed it. That way, they have a base and then can extend and dig around as much as they want. What I also did was put a half-log hide on top of that to make her feel even more secure. Once she had established her burrow, she shoved dirt into the half-log entrance and webbed that off, too (then molted shortly after).Well, I added a good bit more substrate in the Blondi's tank. Guess what? NO burrowing... How about that? Still alive though.
I am not 100% sure, but I thought I had heard somewhere that sometimes blondi will find a previously-occupied burrow and move in, then give it their own "homey" touch. So, giving her somewhere to start might just do the trick.
And please try to settle down with the remarks, we really are just trying to help you and your girl out.