Since when did you bought her? From what I understand here, both of you are just new with each other (especially her). It takes time to have her trust, trust isn't something you get easily you know. You need to be more patient. To start with picking her up, use a used clothes or blanket/gloves (stayed under your pillow for over a night), but I'd prefer the used clothes. If she keeps on scaring you, well it's because you're also scared of her quills poking your hands. While picking her up, you need to be calm and strong, don't be shocked everytime she hiss and tries to get you with her quills. Also, the most important part there to get her trust is quality time. Handle her everyday, play with her, pet her, HAND FEED her (that's what I always did because I can't have quantity time for my hedgies because I'm a student, and you know what, my hedgies trust me!). After all this hard work, you'll both be enjoying both presence and everytime your hedgie's with you, I'm pretty sure she'll be happier.