Greetings, Samuel. Normally a female's body looks somewhat depleted after laying her eggs. If she still looks very full, then there is reason for concern. Some would say feel her tummy for the eggs, but I have done that sometimes and not been able to feel eggs that are actually there. If she is one of those big female veileds who always look a little "full" in the belly, then perhaps she laid her eggs and is fine. Let us know if you find eggs. And you may have to check the entire bin to find them. They will usually be very near the bottom. If you don't find eggs then the please answer the following questions:
Some questions: was she mated, and if so, how long ago. If she was not mated, do you remember when you first noticed she was "eggy". If you can remember- when did you first notice the egg outlines on her body? I know we don't always write these things down, and it's not alway possible to remember exactly when, but a rough estimate will do. These time periods will give us some idea if she's possibly egg bound, or just still working on her clutch.
Sometimes they do dig for a few days until they get it right. A few things can help her: 1. make certain her soil is nice and moist. If it is too dry she may dig but not lay. It should be moist enough that you can form a good firm, stable, clump of it when squeezing it in your fist. Another method I use is to actually try to dig a tunnel in the soil myself, and make sure I can pass my hand in through it and it not fall down. 2. Showering the female can sometimes help, as the added hydration can ease the laying process and get things moving down there.
Finally, I would really like to see a photo. The photo can show us if there are any signs of stress that you may not notice since you see her all the time. It will also give us an idea of the size of the eggs within her.