Well, this sounds like some vet detective work is in order. My corn never has hurled in his 2+ years and his temps at night routinely get down to 70, still...yours perhaps is a little more sensitive...
The positive thing is it kept two down, I would wait, like you suggested, to feed her, then get her back in the tank for overnight and see if it makes a difference.
Find out from the previous owner if they feed in cage, perhaps she ingested a bit of the substrate and it's causing her gastric difficulties.
Rome did not build a great empire by having meetings, they did it by killing all who opposed them.