Madeguada, I know it can be frustrating when you want to cuddle that cute kitty and she won't allow it.
I agree with CasperKitty. You need to have a lot of patience and give her time. She will come around.
My Elvis used to only let him touch him on the head, ears and neck. Now he will even roll over sometimes and let me scratch his belly. He NEVER used to like this and would scratch if I tried. Some cats will never allow belly rubs, and I was so surprised when Elvis did.
Cats need time to become accustomed to you, and they will build their trust slowly. Just accept that you will have to do things on her terms, and as she becomes more comfortable with you, she will warm up and trust you more and more. Good Luck!

PS- she's absolutely gorgeous!