OTOH, we now know she is 17, not 17+, so Nale and Elan are 21-23 (depending on month of birthday; well, Nale was 21-23).
About her level, last time we saw her in action, months (maybe more than one year) and hundreds of pages ago, she was WIZ 3, but since them, we've seem members of the Order gain about 4 levels. Going from 3 to 9 isn't that stretch for her. That's no proof, sure, but it's not unreasonable, if she had been realy studying and training.