Siamese tend to be a bit on the hyper side, especially when kittens...it's just normal for the breed.
Make sure she has plenty of toys to keep her active...balls, toy mice (leave out the catnip), ribbons or yarn tied from different things to dangle down for her. If you have an old brown grocery bag, or boxes, they love those too.
She will eventually grow out of some of this, but make sure as soon as she is old enough to get her fixed...a Siamese coming into heat is ear deafening!
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