She´s absolutely lovely!
She is just doing what kittens her age are supposed to do.
Usually they do this aggressive/educating playing with the other kitten(s) from the litter, and to their mommy. It serves many purposes; learning what´s acceptable interaction between individs, training her motoric skills, agility, how to catch a pray, etc.
If she is your only cat, then you´ll have to be her play mate! Your body has to be a compliment to her toys, in order of her education. Show her that you trust her, and don´t back off. A good idea is to set aside some "playing time" when you interact with her at her level, on the floor, bed, sofa, etc.
Don´t accept her "attacs" when you are busy doing other stuff, and don´t want to get interrupted.
This is a passing phase, enhanced by the fact that she was taken from her mom rather early in life.
When you play, try to imitate what she is doing, and wait for her response. This will lead to the two of you bonding, and understand each other, time well spent for your future life together.
Just one word of advice - never use your hands to punish or frighten her, because that could eventually lead to her attacking them in the future, something not acceptable.
If necessary, you could use a spraybottle with pure water to spray just a couple of drops in her face, to correct unacceptable behaviour, but then you of course have to catch her while doing it!
No chemicals whatsoever, and I do hope declawing her isn´t something you would ever consider.
You have absolutely no time to lose, so you´d better get started being her sparring partner. Good luck!
