Ok some updates-
While I was cleaning out the regurg from her tank I noticed what I think were some fairly large pieces of aspen bedding stuck to it (I'm keeping her on paper towels). So I'm guessing that she swallowed some of her bedding when the breeder fed her and that is why she regurgitated. She also took a pretty big poop last night and it seemed really watery though-don't know if that's fine.
Also regarding the temps, today I measured about 88/89 on hot side, and about 76 on cool so I think it's getting better. I don't really know ambient temp until I get a probe thermometer. I also noticed that she spends most of her time sitting on top of the hot side hide. I measured the temp and its usually 90-95 on top of the hide and 88/89 on the ground of hot side. I'm guessing this is fine?
Still not too sure if I should even bring her to the vet-I think I'll wait two weeks, try to feed her again, and see how that goes.