I don't agree with debarking either. They slice their vocal cords.
As for Chis, I've heard that a lot are pretty neurotic. To me if a dog doesn't have it's bark to put fear into other dogs, the Chi will get even more neurotic and maybe vicious.

I hope she rethinks it and does research on the net. She'll come across a lot of negative info on debarking that will hopefully change her mind. Or...let her see this thread!