How does Laurie Faria Stolarz use imagery in Blue Is for Nightmares?

Imagery:

"There, in the peaceful whirring of the wind, I can almost hear my grandmother's voice, telling me to trust my insights, telling me that it's when we don't that tragedy occurs."

"It's not everyday your best friend makes you feel like some freakish character straight out of Steven King novel: Stacey Brown, coed by day, psychic bed-wetter by night."