Hello, Its possible that too much dairy products can cause vomiting as the enzyme required for digesting milk products called lactase can be limited in children. In the absence of fever, repeated vomiting or other concerning symptoms you can monitor her with increased fluid (water, mild juice like lime juice with a pinch of salt) to prevent dehydration and a very light diet. If she develops fever or dehydration symptoms its advisable to consult with PCP to eliminate other causes such as infectins or lactose intolerance.