Why does Gail talk so much about ‘wind and mountains’ on page 65?

From the text:

Had I any sensitivity at all I might have recognized that all this talk about wind and dirt and mountains and childhood was my mother's way of saying she wanted a few moments of purity, a temporary escape from the sordid drama that was playing itself out in her own house. But I was on the trail of something that would lead me out of childhood.