why is the narrator bothered by the new road, and the ease with which she is able to arrive at her destination?

She expresses a need for suffering in order to achieve the goal of arriving at her destination. In the past, her family took a bumpier road to town and were made physically ill by the passage. Now, the smooth road implies a lack of honesty or integrity for the narrator, and she feels as if she has "cheated" by arriving at her destination without suffering.