Hi. Thanks for posting your question on HCM.
There are many causes of persistent vomitings and you should note down following points
1) The most common cause is some Gastro oesophageal reflux disease and
peptic ulcer. Avoid spicy and junk foods and take more of water and milk.
2) Avoid taking laxatives without any proper
medical advice and the obstruction in small or large bowel is to be ruled out taking proper medical advise.
3) Persistent vomiting can be due to
Hepatitis also that means due to some infection and inflammation in
liver, so get the liver function tests done .
If persistent vomitings are associated with head spinning etc, Imaging of the brain may also be needed .
There is nothing to get worried but your daughter need a proper medical consultation to rule out these common causes.
Hopefully, i have answered your queries.