Please write specifically about Mary's feelings about her grandmother. What are some of her grandmother's habits? What does she suffer from? What does she think about Mary and Lecia? What does she reveal to Mary about Mary's mother?

Mary does not have many pleasant feelings for her grandmother. She does not like the ruled, strict existence her grandmother enforces upon the family when she comes to live with them, or when they went to visit. Her grandmother suffers from cancer/melanoma. Which is "treated" by having mustard gas shot into her leg. Her leg then developed gangrene and was amputated.  She thinks Mary is lazy, wild, and barbaric. Lecia she likes because Lecia does things to please her, like she can tat and learned to tie her shoes at a young age. Her grandma reveals to Mary her mother's desire to please her mother. She also  reveals that Nervousness sort of runs in the family. She reveals a lot about her mother's past. Like the one picture Mary has of her mother as a child, and the story behind it. Her grandmother is always doing something. She carried a doctors bag, which held make-up and little poeny embroidered hankies, and a hacksaw. She also reveals that Mary's mother could pull her self out of her Nervousness in a crisis, and be normal. She reveals her mother's first husband and other kids to mary.

Briefly, What causes Mary and her family to run from Leechfield? What happens on the bridge?

There was a hurricane and she throws up then they get in a wreck.