i have to agree with gregg on this one. make sure there are a couple nice tight secure hides, one on each end of the enclosure. clean water as well. then... leave her alone. try again in a week. if it ate right away, then the snake is probably fine, imo. it's probably shocked by the new environment and getting used to it. either that or something is stressing it out. try not to disturb it unless absolutely necessary until it's feeding on a regular basis.