That typically means that they reeeeaally need to get those eggs out.
Is she alert, active, moving around? If that's the case I would see if there is a problem with her laying bin. At this point, personally, I would call this an emergency and would take something like a large bucket or a trashcan, fill it with 12" of moist soil or sand, dig a tunnel for her, and leave her in there abandoned. She may spend a few minutes trying to get out but if she really needs to lay this should give her no option but to lay. There must be something off about her laying bin now that she won't use it.
Just in case, remember that a laying bin must contain about 12" of sand or soil, moist enough to hold a tunnel without collapsing, and must be at least another 8-12" wide. And you can't watch her while she lays, so I recommend setting up a webcam if you have one.
If she is not alert and active it may be just at the point where she needs medical intervention and I would go to a vet. They should give her a shot of calcium and a shot of oxytocin (oxytocin begins contractions of the uterus and calcium is essential in all muscle movements), and this will make her have the eggs within hours.