So sorry to hear that! I would just make sure the hatchling is staying at the proper temperature and humidity. Keep a bowl of fresh water nearby and make sure she stays hydrated. That will be key. Don't worry about any solid foods until she shows signs of recovery and alertness. All fluid therapy is what the hatchling needs now. Probably will need a tube feeding in about 4 to 5 days. The fluid therapy should be aggressive. Diluted Pedialite will be a good choice for now and make sure all fluids are warmed to at least 82.0f - 84.0f. Both soaking and drinking water should be warmed. Absolutely nothing solid by mouth. The regurgitation has irritated her esophagus and gastrointestinal flora. Please be gentle and try not to handle her much at all except for placing her into the bowl of diluted warmed Pedialite . Good luck and she should respond to this but it may be a slow process.