Jenn's advice is good.

Also, do you know what she was being fed before you got her? You might want to stick with exactly what she was used to until you know she is well settled in to her new home.

Being shy is definitely normal for hatchlings. As long as your temps and humidity are good, it may just be a matter of time until she feels comfortable enough to eat. Keep leaving her alone (other than tank maintenance) and offer her food once a week.