Thank you for your query.
I can understand you concern. If the nose bleeds are due to haemangioma, the doctor would have noticed any abnormality in the nasal mucosa. It is better to get the child's blood pressure to be examined to rule out hypertension
as a cause of nose bleed.
If headache, nausea
persist then discuss with your doctor and get a contrast MRI
of the brain done following a thorough clinical examination. This investigation will reveal of any abnormality in the brain.
I hope I have answered your query to your satisfaction.
Wishing your daughter all the best.
Rajiv K Khandelwal