Its kawashiorkor, the are many types of treatment, i think that this is a very extremnly case, you can give a progresive diet of nutrients, first 120 kcal/day/kg of descremated milk during 2/3 weeks, then you can increase the diet with animal proteins. In severe cases, small blood transfusions, plasma and / or proteolysis can be used to combat hypoproteinemia, as well as parenteral hydration.
Look the arms, in the first two photos, very skinny in both this is a sign of malnutrition that could cause the kawashiorkor, in the third photo there is another child, other case of hepatic cirrhosis? I think that you should rule out the kawashiorkor because liver cirrhosis in both child's less likely. But we have to wait for the answer.
But except swollen abdomen ,no changes like hair, face and even limbs looks near normal when abdominal distension decreses.....is ter any other differentials
Good guidiance from Hipocrates. And also follow her urination with multiple weight checks
