day, nanette rosa brings her two daughters to feed the horses. it is their favorite part of the day. at the time they don't think about pain. >> it's very difficult for my mom to have two daughters with cancer. sometimes we both get sick at the same time and she don't have anyone there to help her. it really affects her. >> reporter: 16-year-old coral is the eldest of her two daughters and both battle cancer. coral was diagnosed with neuro bla blastoma, a cancer for young children. >> she had removed half of her stomach and her intestines. >> reporter: nearly six decades, the u.s. military used much of the vieques island as a bombing range. now about 3/4 of the island's