There are multiple causes for vomiting it could be a viral fever, indigestion, excessive crying, etc so there isn't enough information at present to give you a specific diagnosis. I would advise you to meet a pediatrician so that she can be examined and undergo necessary investigations to find the underlying cause and have it treated accordingly. Kindly do make sure that your daughter is well hydrated as excessive vomiting can cause dehydration. So kindly make sure she is given ORS so as to control her dehydration and give her a liquid diet of soups and juices which will be more tolerable for her and slowly increase the consistency of food based on how she tolerates it. If the problem persists or worsens visit the pediatrician at the earliest.