Thank you for your query.
I can understand your concern. However, one should not go by the blood test
only as one can get false positive or false negative reports too. The test has to be seen in conjunction with the clinical findings. If there is evidence of thrombosis
in the large malformed vessels then only the test is significant.
The doctors have rightly called you after a month for review as they seem to be of the opinion that things are under control.
I hope I have answered your query to your satisfaction.
Wishing your daughter all the best.