Beatriz's Plea: Save Dolly's Life Please

Hi, it's Beatriz and Dolly needs your help. She is 3 months old and weighs 1.3 lbs. I just came from the vet at Oak Elm. She needs an ultrasound and X-ray. Her body is not absorbing the food. She has had diarrhea for a month. Her sister Dotty passed away. Please help me save her. Every amount helps. The ultrasound will be Friday. Please, please help me save her. They were thrown in a park in Indiana. I picked them up on July 6. They spent 11 hours at the park. They were covered with ants fleas. I layed on the ground and softly said " come here baby I am one of the good ones" and Dolly came forward as Dottie layed behind her. Dolly deserves a beautiful life with a loving human. Help me make this possible. I don't want Dolly to die. She eats, then 10 minutes later it's diarrhea. I don't know what else to say; I am begging for your help.