Seems like normal behavior to me. The 'nibbling' on your finger could be test biting or grooming, if she's grooming you that a good thing, but no it won't stop, that's just something they do. They groom lol as far as her acting different at night also normal, during the day they are half asleep making it easy to carry around, pet, etc. Once they're up and alert its a different ball game. I recommend tent time, or even free play in a glider proof room, watch TV, read a book, etc. Let her come to you, little by little she'll begin to love your presence. Good luck !