on our final day, mariamu, a devout christian, takes her surrogate sons, baracka and amguru, to church to me that you have been the victim of some of the worst of humanity, yet you have such a bright outlook on your fellow man. >> it's true that i have suffered a lot. and if i had not let it go, i wouldn't have been the person i am today. and that is why i carry on. >> reporter: a message of hope she wants to instill in baracka and anguru, who like her have seen so much horror in their young lives. when we come back, a medical mission. the boys meet another guardian angel, 8,000 miles away in new york city. what's the one thing you'd like to see when you get to new york? >> swimming. >> you want to see a swimming pool? i think we can try and arrange for that. >> reporter: we're with them on a life-changing quest to make them whole again. for a quick and convenient clean, try swiffer wetjet. there's no heavy bucket, or mop to wring out, because the absorb and lock technology traps dirt and liquid inside the pad. it's safe to use on all finished surfaces tile, laminate and hardwood. and