I would slightly lower the temp assuming you are keeping her in a 6 quart tub this leaves very little room to thermoregulate.
I would lower to 86/88.
If you have no done so, use aspen as bedding you would be surprise of the difference it makes with hatchlings.
Also because they are all different try to put a plastic flower pot saucers (about 6 inches) for hide, over the years I had hatchlings that did not want to eat and then soon as they were provided with a hide they did.
And again crumble newspaper, brown paper bag and most importantly keep an eye on it and make sure she is well hydrated.