Leave her alone in her cage for a while so she can get used to her environment, new smells and sounds etc.. she is possibly a bit confused and scared because it's all new to her.
Don't go straight into handling, it's best to speak to her and give her a few sunflower seeds as treats so she understand you're not a threat before you start handling, otherwise she could be scared.
Licking your hand is normal though, there may have been a food smell on your hand which is why she licked it.
Once she gets used to her new environment and yourself, she will come out of her house more