Oh hell... I hate it when people won't man (or woman) up and realize that a dog is not a human. I could say all sorts of things about how your friend's dad needs to wake up and realize the Westie is a dog, not a person, and that fried foods are TERRIBLE for it! Never mind the bones if there are any. That kind of thing just makes me
so mad. But I shall refrain because that is not what you're wanting out of me. ^^;
But FRIED chicken? That Westie is doomed to diabetes/other health problems if that keeps up... Oh Lord the terrible fats and salts... D;
Have a look at
this site for starters. Looks like it has some helpful outlinks, including one at the bottom that will take you to a different site; my only issue with that site is that it asks for an email address and I know some people aren't kosher with that kind of thing, even if the site is harmless. I dunno for sure on the nutritional profiles of the recipes, though.
Your friend should talk to their veterinarian, too. Have Friend's Dad and Friend take the Westie to the vet together and have them inquire after homemade canine foods or resources for the same. I'm always a little skeptical with vets, but that's why there are second and third and so on opinions.
I am glad that she's a little hesitant with raw. It does take a lot of research to make sure it's done right. Has she looked into buying premade raw foods? Like Stella and Chewy's or Vital and the like?