Go into her profile and into the edit mode. Just above where you have written her Biography, there is a string of buttons. The second one from the right is the Category button. Clicking on it will open a search bar, and you type in what sort of category you want to add, in this case, "Salish". This should bring up any categories with this word in the title. Click on the one you want and it will add it to the profile.
Does this help? Is there a category there that works?