I doubt it is the raw food.
It may be a particular food that makes her breath smell.
My dogs have always had tripe every other day and 'other' meats between. But Luca get bad breath if I do that with him. So he only has it about twice a week.
I would speak to the vet before giving any medication of that type.
How has this come around to her food when her nipping you was the problem
She has had a lot going on with eye ulcers etc and was probably fed up, as said.
Just read the leaflet and make sure she isn't fed up with being messed about.
Don't overthink Lyn