Since she's so tiny probably 2 weeks would be fine (she's not likely to have upchucked gallons of stomach acids) but on balance, she is a young and small snake so don't hesitate to see the vet if she seems off at all. They aren't as tough when they are young as they are as adults.

She should have been fine with mice, heck my boas go straight to rats so that prey size should have been fine for her unless she's incredibly tiny. Any idea of her weight?

Doublecheck that Accurite just in case it's misreading your temps. Sometimes they go wonky if the battery is getting low.

It wouldn't hurt at all to have a fecal float done. Since you're going to be at your vet's anyways, I'd certainly mention the regurge and get a cost on a fecal float just to rule out any issues with internal parasite loads. No need to take her in for that, just the poop and the results come in quickly.