Hi There.. I Have Short Question For You.. I Meet

Hi there.. i have short question for you.. i meet recently one girl, she had an not so serious anomaly, but on vein close to brain, so subdural hemorrhage happened, and she was operated in greece-solun, center for balance is damaged, but doctors said she will fully recover.. now what i am worrying, what i want to know, is there possibility that happen again to her? btw she is only 16 years old..