Hello Thanks for a vivid description. It does in fact looks like seizure. She seems to be prone for recurrent seizures. Nausea and vomiting may be part of seizure itself many times. You need to consult a neurologist who can then guide you about further investigations for your daughter. Now that you know that it starts with nausea - seek immediate medical help when it happens. Video of her made during the event would be quite helpful for the treating physician. Good luck to both of you.