What should I do with the Goldie?

Yesterday a Goldie was dumped on my doorstep, she got left there by a man who then returned to his car and sped off. My mum was operating on a horse at the time so I looked here for advice. Btw if you read the 'true or false, and can i take legal action' question, you'll see that I didn't know the Lisa person who put up a question last night about me. Anyway my mum sent over her istant as the op required less people than she thought, and the dog and I were brought to the Practice. She was given some shots and we are taking her to a groomer today as her coat is very mangled. however she still will not eat. My elderly lab offered her own food to the Goldie, but the poor thing just looks at it then goes back to sleep. I think she may have a problem ith her teeth and I'll tell my mum later when she gets back from work, but does anyone know what I can make for the Goldie that she may eat?