What metaphors are used in 'Night, Mother by Marsha Norman?

Jessie uses the metaphor of a bus trip to describe the reason for killing herself. She states that it does not matter if you are fifty blocks from your stop when you get off because for her the stop will be the same right now as it will be in those fifty blocks/fifty years. Jessie's is a life that, from her perspective, holds no promise and no future.