Not sure how your state works, but many states default to the youngest/worst driver as the primary on the most expensive car. You should be able to change that with your agent moving her to the lowest cost car.
I had not done that, but just did so and it still fails. I have logged this on the forscan beta page.
I am running 2.4.17 beta. I will wait for their reply before rolling back to a previous version.
Thanks
Scott