s c1 maurizio gucci. >> when dateline continues. ♪♪ [ male announcer ] you can join the battle to save lives by supporting st. jude children's research hospitalarrived, my three-year-old came to visit, and claire lit up. she was quiet before. and i thought it was just because cancer's hard, but she was really missing her siblings, and i didn't realize how much. all right, young lady. we're going to see how much you weigh, and how tall you are real quick. ♪♪ mama. hey, claire. [ laughter ] ♪♪ [ male announcer ] families never receive a bill from st. jude for treatment, travel, housing, or food, so they can focus on helping their child live. when you call or go online with your credit or debit card right now, we'll send you this st. jude t-shirt you can wear to show your support to help st. jude save the lives of these children. i experienced life at st. jude. every dollar that goes to st. jude goes to a good place. it's keeping families together during the hardest thing they'll ever face. ♪♪ the first thing i'm going to do when i get home is pet my dog. ♪♪ [ woman ] st. jude saved my daughter's life. [ claire ] i love st. jude. [ male announce