She is right, go to a local animal shelter and save a cats life. Growing up with animals my whole life I've learned that when animals grow up with kids they become protective and learn what is right and what is wrong. Getting a kitten right off they will not know better and will be very playful (scratching and biting), I use the squirt bottle method early on for that. However, I have seen many of my friends with purebreds and mixes that didn't grow up with children so they don't know how to handle them and it ends up not good, but my friends with children and cats (purebred or mixed) they learned to behave when around a baby or young child. My cats never had kids around them or strangers so they tend to attack and I don't let them near my niece or nephew for that reason. There is no difference in getting a purebred or a mix when it comes to kittens and children, the only difference is getting one from a shelter will save a cats life.