I finally found the Holy Grail of food for picky eaters! S&C Freeze Dried Patties!
After a mediocre response from Luxie with The Honest Kitchen, I decided to try S&C FDP and she goes CRAZY over it! Specifically the Duck Duck Goose and the Beef patties. She's just ok with the Lamb and Surf&Turf flavors, but I feed them to her anyway because I figure it's healthiest to rotate. She'll eat them anyways so that's good!
What a relief!! She was really starting to lose weight and I was getting so worried. Never knew Chihuahuas are so stubborn, some would rather starve than eat something they don't like
A special shoutout to MChis who suggested S&C FDP in my THK post! <3