We were on the plane, halfway through our journey, when my daughter leaned close to me and whispered, her voice barely audible over the hum of the engines,“Dad, I think my period started.”For a second, her words hung in the air. I saw her eyes wide with panic and embarrassment, and my heart immediately ached for her. She was still so young, and I knew this was one of those moments that would stay with her forever. Without hesitation, I reached into my bag and handed her the emergency pad I always carry, just in case.