I agree with Jen and the others.

There is nothing wrong or really different about your kitten.
She's got CABIN FEVER.

All of my fosters act different in the foster room. They are starved for affection, even though I spend the maximum amount of time in there. I sleep with them all night, if I can stand it!

For example, in the foster room, the kittens dive bomb my head. (I really have to watch that they don't do serious injury around my eyes)
They go completely nuts in there. I've had to remove just about every non-stationary item from the room, including the bed rails!
(the matresses are sitting on the floor)
I believe I'm never gonna get a night's sleep, when after their isolation period is complete, they come out and they are totally different cats.

My current foster, who could not stay off of my face at night, is not even found in the bed anymore.

They calm down a lot, and get used to other cats too. Sure, there will be some that are not matches made in heaven, but usually all will be fine with slow integrations.

So, if you really think it is the breed of cat you've chose, do return her, but learn something from this, when you think you've found your next kitten (or adult):

They may act exactly the same, because it is normal.

And you can't go returning them all. It's not fair to put a cat through anymore life adjustments than absolutely neccessary. That's where we get our older (non adoptable) cats in rescue.