Your dog has intestinal worms. Don'y worry, it's curable. Either go to the Vet or check out a dewormer at your pet store or supermarket. Follow the directions very carefully. Best advice is go to the Vet.

You can't make her eat until you identfy what is wrong with her. Make sure she has water, If she won't drink, try some ice chips. If you really love her, please find a vet!