C.L.
You might want to ask around the neighborhood about what the going rate is or even just ask the girl what she charges. I would think at least $10/day, probably more, depending on how much time you are expecting her to spend with your dog. I pay a professional dog sitter $16/visit (so $48/day when we are out of town) to take care of my two dogs. They are older and need to be given medications also. The dog sitter also brings in the mail and newspaper, cleans up the dog poop in the yard, waters flowers and generally watches the house. Is the girl going to be doing any of that for you? That might be a factor too.