I don't know how old your kitten is, but little kittens tend to be "bitey," and if they're 3 - 7/8 months old, she's teething! She needs appropriate things to chew on, and she needs to be taught that hands, feet and ankles are not appropriate things to bite.
We used boxes of bendy straws. They're a thick plastic cats won't just eat - when they start getting chewed up, throw them away. But scatter them EVERYWHERE.
And when she goes to bite a finger or hand or foot or toe, say "NO" firmly, blow a short, sharp puff of air in her face (her mom would bop her on the head with a paw or hiss at her), pick up a straw for her - and then walk away. She'll learn that straws are OK to chew on, and that she otherwise gets ignored - which will reinforce that people are not OK to bite or chew.