As already covered a couple times, you need to let her settle in and get eating, get comfortable before starting handling. Baby snakes are scared and defensive, going into a new home is a big change. Not uncommon at all for a newly added snake to be striking and biting out of stress. Once she's gotten a few meals in start handling a couple times per week for short periods, you won't even hardly feel a bite so don't worry about it and she will calm down with time.