Why doesn't she just look online for a qualified horse/pet sitter in the area? If there is a University there that teaches equine science, they must have students/professors that are qualified to take care of horses for a few days. I can't imagine it would be that difficult to find someone else to do this.

When I travel, I sometimes have to find a pet sitter. Yes, it might be nicer if I had a friend (someone I know) to do the job but, sometimes, I have to use a professional service. I'm sure your T can figure it out, just like the rest of us do.