"Well, what do you think happened to the missing crew then?" I asked again. "If you don't think that they drowned, or were killed by mermaids, then what's left?"
There was mutiny, of course, or some kind of insurance-plot conspiracy but I was fairly sure Shell would go for one of the crazier answers like a kraken. Or maybe aliens.
Instead she said, "I think the sailors are all still here. I think that they never left the ship."