I have mostly babies right now.
I have found many of them to be pretty moody. A lot of nippers. Some days are significantly better than others for many of them. I have two that are always really unfriendly.
Between being shipped and being so small and defenseless, I think they're just naturally more nervous, and frighten easily.
Most of my nasty babies have grown out of it, between chilling with age and getting used to being handled. I try to handle them a bit more frequently, if they get too upset I will put them back and try again another day. It's not abnormal, and your baby will probably learn to chill.
Also, they do definitely have distinct personalities, in terms of how they tolerate handling, being laid back or nervous, aggressive, moodiness, etc. Sometimes you just get one that is temperamental.
But more than likely she will grow out of it, especially if you work with her.