I heard her in a radio interview and she sounds like a very thoughtful person, actually. They were stopped by two other troopers, who told them they could drive in the break down lane when traffic was congested. She said they drove slowly in the breakdown lane for part of the time, and would get on and off depending on the whether the traffic was backed up. (I hate that area of Boston and at that time in the morning, around 8:30, it's a bumper to bumper horror. I can see being in labor and being worried, whether you were on your way to your own home for your own homebirth, or on the way to the hospital you chose to have your baby).
They refused the ambulance because they were only a couple of minutes from their exit and feared that they wouldn't get to the hospital in time if they waited for the ambulance-- who would have to deal with the same traffic.
You would think this trooper would have at least checked with the hospital to see if she had been admitted before sending in his ticket. If they had been lying, he could have gone ahead and processed the ticket. If he had called, he would have seen they were telling the truth. He had the option of not processing the ticket.
Seems he lacked absolute common sense, which is frightening. I am also guessing he probably has no experience with having a baby. At home or at a hospital.