It can bring down prices to have her dad as a named driver though. That is what we did I am the main driver (I drive it more), Matt as a named driver and my brother as a named driver too, he has thirteen years of driving and is a transport manager and it bought down our insurance.
That's a better idea, as having the policy in your parents name would be real dodgy, but of course having dad as a named driver in case he ever needed to drive it is fine