She also said, "On Sunday, it began to make sense to me how we might live on the boat," which is really nice to hear.
Indeed. My seven-year-old is at the weird stage where he finds sailing "boring" (unless I bring other kids, at which point he frolics all over the boat shouting out the names of things), but then he refers to a future in which "when we go around the world, we will do X and see Y and play with kids from Z".
I'm putting him in Optimists next June. He really needs to fall out of a boat a couple of hundred times, but he's getting there.