You should never feed rodents dog or cat food as they are high in fat and protien made for strict carnivores, I told you that in the other forum but hey why believe a Breeder/Vet tech/wildlife Rehabilitator? Rodents need fiber and vegetarian protiens with often lean meaty/dairy/nut protiens. They need fruits and vegetables, seeds, nuts, plants and vitamins/minerals aswell. Stop feeding them dog/cat food! It affects their livers due to the INCORRECT diet and nutrition. You are wasting their energy on nutrients they don't need/use or would ever depend on in the wild. Never feed an animal food that is not made for their species...
And FYI, yogurt treats are perfectly fine, they need to just be given in moderation like many other foods.
Hamsters have EXTREMELY sensitive tummies -_-
Also just Mazuri is not enough Nutrition for a Hamster of any Species. You have to add seed mix because it's part of their diet along with other things. It doesn't matter if you think she is picky, Seed Mix is natural and always eaten/enjoyed by All hamsters. There is no way your Sadi doesn't eat seeds, that is literally impossible. If you aren't willing to provide a healthy diet of all the food groups they require then don't own a Hamster. Simply having one or two "Healthy" foods is not enough, you need to balance it, that doesn't make it "okay". So yea, you got the Pellets where is the rest of their food besides the Fruits/vegetables? They are rodents for crying out loud, they need grains and seeds in most of their total diet in order to maintain a healthy body/lifestyle.