I've been to Lourdes, as a reluctant youngster on an organised school trip (Catholic school - bringing youngsters to act as wheelchair pushers, stretcher bearers and mass-fodder, essentially). I hated the place and was sickened by its exploitative nature. Now I'm a secular humanist who finds the whole idea frankly potty.

And yet.

If people have gone to the trouble to raise the money to pay for the trip, and the kids will gain something culturally, spiritually or socially from it, and it helps make the family stronger through sharing the experience then they should go. Heck, it's got to be a change from the awful daily routine that goes with having CF. As for miracles - I don't know, but it sounds as though your cousin and her family certainly deserve something special.