. >> this is dalal from iraq, megan from nepal. are the two liberian children cecilia and abigail. >> they call you the saint of staten island. does that make you uncomfortable? >> it does. >> why? >> people shouldn't feel that you need to be a saint to do good things. because really, any ordinary person can do good. >> reporter: she's arranged for all four tanzanian kids to receive prosthetic limbs from a top-notch medical team. a world away from rural tanzania, the kids feel at home on the eve of a very important next chapter. >> hi, everybody, how are you? good to see you. how's everybody doing? step back some more. feet back. >> reporter: two mornings later, they arrive at the shriners hospital for children in philadelphia. >> oh, 80 pounds, nice posture. >> can you turn like this? can you do that? there you go. >> reporter: they're back a second time, having outgrown their prosthetics, and they'll keep coming back till they're fully grown. how have they changed to you physically and emotionally? >> they're a lot more comfortab