question:  Why did Lorraine duck her head when another car passed by the group on their way to the fountain?
context: “I know now that keeping that promise not to talk about the dam was a great big mistake and could have cost lives. Maybe you were mistaken about a thing or two before the flood, but what about the haunted house you moved into? You were the one who tracked down the ghosts in the attic and the cellar and goodness knows where all. There was one I used to call the spirit of the fountain, but what she was or how she spoke to me is more than I know. It all began, she finally told them, the summer before they met. Her thoughts were what had made it so hard, she confessed now as she reviewed everything that had happened. Every summer Dr. Bolton and his wife relived it. In another year she would have outgrown her childish resentment of her parents’ vacation or be grown up enough to ask them to let her have a vacation of her own. In another year she would be summering among the beautiful Thousand Islands and solving a mystery to be known as the Ghost Parade . As Judy wiped it away she noticed that it had fallen on a picture of a fountain. The thrill of walking up to the door of the palatial Farringdon-Pett mansion was still ahead of her. On the lawn a fountain still caught and held rainbows like those she was to see on her honeymoon at Niagara Falls. It had helped to pretend the fountain in the picture was filled with all the tears lonely girls like herself had ever cried. She had turned to see her grandmother and to hear her say in her usual abrupt fashion, “Enchanted fountain, indeed! She and Lorraine had listened to this much of what Judy was telling them without interruption. And she went on to tell them how, the very next day, her grandparents had taken her to a fountain exactly like the one in the picture. It was in the center of a deep, circular pool with steps leading up to it. Beside the steps were smaller fountains with the water spurting from the mouths of stone lions.
output:  She knew who the new owner of the estate was and didn't want to be seen.
options:  She had recently forged checks and people were looking for her.  She was afraid someone would report that they were trespassing.  She feared that they were going to collide and she was covering her face from impact.  She knew who the new owner of the estate was and didn't want to be seen.