When Michelle Marshall’s Turo rental gets repossessed, the car-sharing company offers her a partial refund. But what about her son’s expensive epilepsy medication? Is Turo responsible for that?

DEAR TRAVEL TROUBLESHOOTER: My husband and I rented a car on Turo for a week while we were visiting San Diego. We paid for “minimum protection,” just to be on the safe side. We did not take any photos ...