"Do we have to pay for water?" my daughter asked last week as she played with Dolphin Magic Barbie and Jet Ski Stacie in the bath.  She's 7, and still discovering the where's and why's of how things work in our household. Recently we'd told her not to leave the garden hose running, because it wastes both water and money.  I explained that yes, we pay a utility company to send clean water through our pipes and into the tubs, faucets, and hoses.  "If you ever need money to pay for water, you can take some of my money," she offered.  As I looked into the face of this sweet girl I'm raising, I was moved by her open-hearted generosity, unselfishness, and willingness to help. And I knew exactly what not to say.  Barbie's Bathtub Adventures Growing up, my family frequently struggled to pay the bills . I remember around age 8 repeating to my Girl Scouts leader that we had an "outstanding Visa bill" even though I had no idea what that meant....