We're just going to look.' Helen Brown had no intention of adopting a pet when she brought her sons, Sam and Rob, to visit a friend's new kittens. But the runt of the litter was irresistible, with her overlarge ears and dainty chin. When Cleo was delivered weeks later, she had no way of knowing that her new family had just been hit by a tragedy. Helen was sure she couldn't keep her-until she saw something she thought had vanished from the earth forever: her son's smile. The reckless, rambuncti