Honey, you've had her for 2 days. 2 days. That is all. She is going to be fussy, crabby, and maybe even lunging and trying to bite you. That doesn't mean that she doesn't like you. She just doesn't know you. What you have to keep in mind is that she is like an orphan that has just been adopted. She is afraid. She is being introduced to new smells, sounds, and a totally different surrounding. If you were brought into a home with total strangers at a young age then you would be afraid, too. You would cry which is what she is basically doing when she crabs. She is angry and scared and alone. She isn't going to like you at first, but she will grow to love you. I know it is hard. We see our sugar babies, and we love them at first glance. They see us and they are terrified. Remember, she is so much smaller than you. You are a giant to her, and she views you as an unknown thing. A predator in her eyes. I would recommend not holding her or trying to even touch her pouch with her in it until day 3-5. Let her get to know your scent. Sleep with a fleece blankie or pouch underneath you. Many do not like to use t-shirts on/inside of the cage, but I have always worn a t-shirt for a day, slept in it, and then placed it on top of the cage with the seams inside or tucked away at the sleeves. On day 3-5 carry her pouch with you in your house. Everywhere you go in the house. I wouldn't recommend right now to take her pouch out in public because that is too many different scents and sounds. Also, you wouldn't want to come into contact with anything that could make her sick.
The most important thing is to not be afraid. They can sense that, and your fear scares them more. So, if she bites you -- DO NOT pull your hand away in fear. That lets her know that her tactic worked. She was afraid, she attacked, and you ran away. Leave your hand there. I know that seems frightening, but it doesn't hurt. Dog bites and cat scratches hurt worse.
I wish you good luck. Just give it time and be patient with her.