Thanks to @antigenx for interview. I'm happy for the opportunity to belong at this community.
Comments about case 1.She could have pylorius congenitl hypertrofy, although it is more frecuent in boys, but cronology fits. Differential diagnosys are intestinal obstruction and sepsis. In case of genital ambiguity could be
congenital adrenal hypertrophy.
We need hemogram, electrolites, gasometry and abdominal ultrasound.
Case 2 looks like glycogenosis, an infant with hypoglycemia and hepatomegaly, without infection, is the diagnosis most probable. To support the diagnosis he would have hypertrigly ceridemia and inadequated respons to subcutaneum glycagon.