I don't know how to tell what level (1-17) she is but she's a Grand Master. As far as I can tell, she has one more level to go to reach the highest level. If I count the lines on the bar on the left, it looks like she's level 16. But, I really can't tell. Her vampire lore skill shows as 9 with barely a sliver to 10.
Edited: on skills panel, she's 9, almost 10