First question are you 100% Positive that she is gravid?

Here is a quick thing you can do to make sure your female is gravid in the first place, hold her head up and tail down and if she is gravid given the number of days you will be able to clearly see the eggs.

So she stayed at 84-86F hot spot during more than 50 days!Now she's at 90-91F
My hot spot is 86 with gravid females (I keep them cooler on purpose) and females seems to lay 40/45 POS which is about 10 to 15 days later than the average of 30 days.