4health brand dog food has a pork formula dog food. And as a raw feeder I feed pork in my regular rotation of meats.
I think there's a lingering bias against pork for dogs because of it's past association with parasites. But commercially raised pork in the US has no more risk of parasites than meat from other species these days. Plus, fully cooking the pork always destroyed the parasites anyway (this is the reason pork is usually well done, even over-cooked and not served more rare. It's not because it tastes better that way; it was just safer. Freezing for a time will also destroy parasites.
One thing I'd suggest though would be to make sure she's getting enough calcium. That can be a challenge when we're putting together odd mixtures of whatever we can get a sick or elderly dog to eat. But the consequences can be severe. If we don't get enough calcium, over time the body will start to draw it from our own bones (same with dogs) to meet its other needs.
One way you could add some extra calcium (other than the obvious dairy products) is adding ground eggshells. Raw feeders will use 1/2 tsp. for each approx. 14.2 oz. of meat (odd amount as I converted this from metric) if they're not offering other bones. I think it would roughly apply to what you're feeding, too. Just let the shells dry and grind them finely in a blender or food processor, preferably one with a glass bowl. They'll sand the surface of a plastic bowl, making it look cloudy. No real damage, but it doesn't look great.
Another alternative, if she'll eat it, would be to cook chicken backs overnight in a crock pot. Just cover with water and let them cook until the bones become soft and mushy. They're completely edible that way and could be a nice addition to her food as a topping. Hopefully she'll like it. It smells pretty great; I've been tempted to eat it myself when I've made it. You could add veggies or rice right into the crock pot if you wanted to.
I'm happy to hear Kit's eating breakfast, at least for the time being. I hope she continues to eat for you. Best wishes for both of you.