Sounds like you already have a possible playmate arranged which is great news.

I agree with everyone else a playmate for your kitten and more time will improve your kittens behaviour.

They hit their peak of naughtness between 9 months and a year and just as you are ready to throw them out the window (joke), they settle down and become very nice cats

Though life with a torti cat is never boring, I can't remember the number of times our torti Milly bite and scratched me when she was young but I survived and she grew up to be a very nice lady.

If she is aggressive put her down gently and walk away, ignoring a cat is the very worse punishment. Also never play using your hands or feet with a kitten, or they will grow up thinking limbs are good toys..not funny when the cat is full grown.

Try playing with fishing rod toys with her but remember to put them away when you are not supervising her as kittens can hurt themselves with string.