Tennis player Elizabeth Profit , 13 , ranks high in her age group ; to turn pro next year . And if they miraculously find a cure for it then that 's great , but I have to live with it . Elizabeth has juvenile diabetes , manages it ; `` I ca n't make excuses , '' she says . Sister Mary , 11 , also a rising tennis star , watches over her older sister . The two girls are the only ones who have been able to play together since their parents died of cancer when they were young.
Tennis player Elizabeth Profit , 13 , ranks high in her age group ; to turn pro next year . Elizabeth has juvenile diabetes , manages it ; `` I ca n't make excuses , '' she says . Sister Mary , 11 , also a rising tennis star , watches over her older sister . The two girls are the only ones who have been able to play together since their parents died of cancer when they were young.