The law of the Church is that unbaptised Catholics (or one who has committed suicide), cannot be buried in consecrated ground. Children are like sponges and purity is easily lost, I would absolutely discourage my child from any intimate friendships with non-Catholics, or bad Catholics, within reason. That's a general rule, there can be exceptions.
People were not "indifferent" to lepers, they hated them. Lepers were thrown from their homes, disowned by their families and neighbours, and required to keep out-of-sight or range-of-smell for the healthy. Holy Mother Church in her age-old wisdom, does not hate non-Catholics. She is sad for them and wants to see them included in the joys of heaven one day. (See my note above: where is the motivation to join the Faith if they are "okay"?)
No worries. I, too, have tried to respond in more details as I can and many times the webpage shows error. Hope this bugs gets fixed soon.
I have serious concern in this law of our Church. What if in a small town, there is only one cemetery and that is Catholic, should we not allow an unbaptized Catholic or non-Catholic or one who has committed suicide burial because of this law? Remember also when Jesus Christ healed someone during a Sabbath? It was a law not to do anything in a Sabbath or on a Holy Day, but Jesus did. That's what He'd like us to do. To do what is right, not just to know what is right.
About discouraging a child from intimate friendships, my concern with this is if we do that, we are teaching division, which is not a loving way to teach a child. He'll learn to see others as impure or ungodly, and himself as part of a chosen few. That can be very damaging, for when he grows up, he may learn to be boastful and proud.
End of Part I - It wont post my full response. :)