I hope she did well... I suppose they've changed things since I auditioned in 2003!
I don't think it matters that you didn't see any other clarinetists. When I auditioned (and, again, things seem to have changed since then) the same panel heard every instrument, so they might have just scheduled people of the same instrument at different times throughout the day. Or she might have been the only one auditioning! You never know.
Best wishes
