rehoming (chico)

i am rehoming my sisters kitten. my sister has some major health promblems now and unable to take care of her now. she is sweet loveable and really playful she was born i think this may what i was told. she is a tortoiseshell cat. i am unable to keep her because i have enough cats as is and i dont want to take her to the shelter i want to find her a good home. she is litter box trained, but she does need her shots and get sprayed my sister didnt got a chance too. she is good with other cats and kids also i dont know about dogs she never been around them im asking a 40 dollar rehoming fee to insure she goes to a good home