Getting her warm and dry is a good start. Do a good over all exam of her. Start at her beak and go right down. Look listen and feel for anything that is out of order. Will she drink water? Eat anything? Is she febrile? Is she laying yet? How old is she? Lots more info needed! Pictures would help too!
She is not eating, not drinking and I have her isolated in a pen with towels. She seems quite OK with staying wrapped up in a towel. She was looking around when it was still sunny out but now she is staying in the towel trying to sleep. Woke up this morning and she was still with us. She is alert and she got up, let out a very runny/water like stool and then pecked a bit at the food.