Bear in mind, this isn't the OP's dog. Am I correct? That is what I concluded from the original posting.....
OP, I would pass this information onto the dog's owner. Educate the owner what really IS in dog food and what you SHOULD be looking for in your dog's food. I followed this site religiously when changing my dogs to a raw diet (broken link removed)
Raw diet is certainly the BEST diet, but it isn't for everyone. I spend more money on my pug's raw diet than I did on the highest quality kibble for her. But clearly, she is healthier and happier on a raw diet and I will keep her on it for as long as I possibly can.
From my research, I've read that canned dog food is far superior to many kibbles. I personally love LOVE Simply Nourish canned foods. It literally looks like something you would eat. Real shredded meat and veggies. When I was on the kibbles, I fed Taste of the Wild and Orijen. Certainly expensive, but it's one of the few brands I trusted to feed my dogs. Even then, I was still very leery, which is why I changed to prey model raw.
Affordable kibbles are Kirkland, Blue Buffalo, Simply Nourish and Nature's Recipe. I would NOT purchase Natural Balance, in my research, it's an over priced mid-grade food. Do not buy into Bil-Jac, Over priced low quality dog food. I've seen excellent results of dogs on Pro Plan. It's not a kibble I would feed. But it's certainly better than what the dogs are currently fed.
I would show the links provided here to the dog's owner. Educate her and let her educate herself on the horrors of many low quality kibbles. Many kibbles used euthanized dogs and cats in their food. Which shouldn't be fed at all. Unless the animal was put down with a bullet or other non-medicated way, you can count that it is slowly killing your pet.