Should I be worried?

[PayItForward]

For every kitten your cat gives birth to, a kitten in the local shelter will die.

As the potentional cat owner adopted a preventable kitten from you, rather than a shelter kitten.

If you care at all for your cat, you'll get her spayed as soon as these kitten are born, assuming she doesn't die in labour.Do you understand that these kittens might be born with one or more genetic disease ?

Whatever diseases the parents carry and there is a percentage likehood of those diseases showing in the offspring...In fact just read this article...are you a back yard breeder or not ?http://www.whyneuter.com/breeders.html

Only those who are good responsible breeders should breed cats..