Aww, so cute.
Call her Lil' Deathclaw... or Stringbean.
Take the cat to the vet, if you haven't already. Get a full check up and get the cat spayed.
You should "kitten proof" the house, or area that it is being kept (I assume it has full range of the house). Much like baby proofing, get down to the kitten's perspective. Hanging wires and the like may look tempting to a playful kitten, thus they may bat at, chew up dangerous stuff like that. Which could result in a lamp being pulled down off wherever, and may injure the cat (or just be broken, and who wants to deal with that).
Make sure that all harmful chemicals or cleaners are securely put away. Some hazardous household items have a sweet taste that animals may want to eat or drink (I know dogs like the sweet taste of antifreeze). Better safe than sorry.
And here's an important tidbit about making sure your cat doesn't wreak havoc on furniture. Cat's are solitary creatures, while they do like the companionship of humans and other cats or animals, they need their own space. I mean, I'm sure everyone would go crazy if they had to be around their friends and family
all the time. It's best to designate a quiet area of the house for the cat's alone time, it could be a room that isn't used or just a corner of the house. This would be the place to put a cat tree (like what MutantScalper posted), one that is also a scratching post. Also keep the cat's toys there and things the cat likes, and of course the cat's bed. Encourage the cat to scratch only the scratching post; praise it every time the cat scratches the scratching post ("good girl," with a treat reward. Eventually you will ween the cat off always getting a sort of food reward when being praised, and she will understand that the verbal praise means that she is doing a good thing).
As with what other posters have said, socialization is key at this stage. Once the cat becomes more comfortable, expose the cat to new situations and new people. If something scares the cat, like the crash of a pan or a thunderstorm, ignore it. Don't feel bad, don't coddle the cat. The cat will work it out on her own, and see that no one else is making a big deal about what just happened, so it must be safe. (Although cats a usually fine with noise phobias, but other things, if she gets scared, just act normal.)
I personally wouldn't let the cat roam freely outside. Not only does letting the cat roam unattended outside put it in danger of injury by car, other animals, et cetra; puts the cat at risk of getting diseases and parasites, your ferocious little warrior also puts wildlife in danger. The Stephens Island Wren had been hunted to extinction because of
one cat (allegedly). I'm not saying your cat is the next feline Genghis Khan hell bent on conquering all small critters that stand in her path, I'm just saying that it's best to be a responsible pet owner and supervise your cat's outdoor romps. It will keep your cat safe from physical harm, from diseases and parasites, which all may equal
death, and it will keep your birdwatching neighbors from giving you the evil eye every time you go get your mail (not to mention that cats may dig up neighbors' gardens for litter use). If you start early enough, you can train your cat to walk on a leash. Some cats are easier to leash train than others, and some may just flat out refuse to get used to it, but you could try.
Good luck!
Disclaimer: Much to my dismay, I haven't had the good fortune to own a cat or kitten.
I have read a lot of cat care books, watched a lot of television programs on cats, cat behavior and care. I'm what one would call "book smarts" on the subject. I suggest you listen to the actual cat owners, and if my suggestions are absolutely wrong then someone please correct them, and I will quietly wander off in shame. I also suggest getting some books on kitten/cat care and training, and ask as many questions as you can think of, no matter how stupid they may seem, when you take your kitten to the vet.
(Edited because of some grammatical error.)
