i had a friend who was so traumatized, that all her hair fell out. she was young. stress definately takes a toll on the body.
i'm glad you are away from the stress now.
try to give your body some good nutrition by juicing fruits and vegetables and drinking them everyday. this will improve your hair. when i started juicing daily, all the grey hairs fell out (not too many of them yet, but some) and new healthy hair grew back in.
i also think that quality rest is important.
take care of yourself in all ways...good fresh food, daily exercise, sunlight and rest.