My seven-year-old granddaughter leaned close and whispered, “Grandpa, can you ask Mommy to stop putting things in my juice?” I thought she might be confused until a doctor tested her blood and said, “The levels suggest repeated exposure. Not accidental.” Then Ruby looked at me with sleepy eyes and asked, “Did I get Mommy in trouble?” That was when I realized the real question wasn’t what was in her juice, but why.

For several seconds after Dr. Patel explained the results, I couldn’t stop looking at Ruby. She sat quietly…