Hi -
I think that getting an animal is a wonderful idea for children. We had (2) cats when both my kids were born, and only just recently had to put one of them down :( and my kids are almost 5 and 6.
We have also thought of getting a new kitten, but before we had kids... we fostered (2) 12 week old kittens... just beware if you go that young, they are fiesty little things that are full of energy and want to play in the middle of the night and you will not sleep!!! They also have razor sharp claws, because they are so much smaller than even 6 month old cats. so, if the kitten were to swipe at (playfully or not) at your daughter it would really hurt.
Just a hint, 6 month old kittens are still small but the nails are not as razorish (if that is even a word), and they are not as CRAZY as the 12 week olds, they have already started to mellow! :)
If you go on www.Petfinder.com , you can put in your zip code, and what you are looking for (Cat, baby or young) and it will give you lists with pictures of the cats at local shelters. I would definately go to shelters over a pet store. At the shelters, the cats have all had shot, are either spayed or neutered, and have been checked out by vets. Also, on the petfinder list, it will say whether or not the cat has health problems (it will show a heart next the picture), whether it is declawed (it will show a paw print) - also... if a cat is already declawed that is one thing, but to actually do it to a cat is totally inhumane - it basically takes claw and bone up to the first knuckle - if you were human... just my one little "animal rights" tidbit, but petfinder will also tell you if they like kids. they will put the word kids with a line through it if the cat/kitten is not kid friendly.
Some shelters will not let you take only one cat/kitten home. They feel that they need a playmate. So, you should definately call the shelters first and find out if they will allow (1) to be taken home, and if they can be adopted into a home with young children.
Lastly, lots of shelters will make you fill out an adoption form with lots of questions.... like will you declaw the cat, or will it be an indoor or outdoor cat. If you say yes to the declawing, and yes to an outdoor cat, they most likely will deny your application as it is not in the cats best interest. They also want to have a name of a Vet that you will be taking it to, so bring your Vet's name and number.
If you have any questions, please let me know... I have had cats all my life, outdoor at first, but now only indoor... and my house doesnt smell like cat or litter box. Even my cat HATING friends will tell you that! :) I also worked at a specialty pet store that also had cat adoptions, hence the reason I know about the applications. So, if you want I can let you know what you would need to get when the kitty comes home!
L.