The kittens are adorable, and hopefully they will all find a good and permanent home. Hopefully mamacat will be neutered and the kittens as well. I am sure you know millions of cats are euthanized every year and in addition many cats are thrown out on the streets and live a harsh, brutal life. It is also suggested when giving or selling a kitten that you have a contract stating that if there is a problem the cat will be returned to you and not brought to a shelter. Best wishes for a good life to these darlings.