Down here in alabama they are hatching out now in the wild. The temp last night was 48f. Im sure 48 will hurt if it was a constant but they survive here. I would say average 65f
I wouldnt worry to much about the ooth, she will lay when ready, i would try to feed about 5 blue bottle flies a day for 2 days just to see. But not all at once spread out the feeding times. Then you will know its a over eating issue
Maybe try to feed her less. The bend could be sqeezing her stomach,(kinda like the over weight people get the stomach band). She may be over eating or having trouble digesting. I would try to offer smaller meals for a week or so and see if it helps.
Mine always hatch a few at a time. But it sounds like yours have dried out. I always keep a moist paper towel in the bottom of the deli cup plus mist every other day.