I agree with bogertophis, the lay box is good to have. When mine are about to lay they all go through the same motions following the prelay shed.....shed, rest a week (usually in the lay box), two days of being really active, another day back in the lay box, do a couple hours of active again, then laying. After the prelay shed they get a very small water bowl.
What are the condition of the eggs that have been laid? ie slugs, windows, little star shapes on them, bright white marshmallow looking ones. What has already come out is a good indication of what is left inside and what issues she may be having.
Also when she is done laying get her a small meal like a fuzzy before she goes blue again which is typically 24-48 hrs.
I would keep a close eye on her. You don't want to lose her due to egg binding.