How does Nina LaCour use imagery in Hold Still?

Imagery:

"She leans out the window and yells, "Caitlin!" as if I might not have noticed my own mother pulling over, like the car she's been driving all my life and the peace is PATRIOTIC bumper sticker didn't tip me off."

"A quiet hill, damp grass under our bare feet. Scar tissue spelling ugly. Clear blue eyes. I'll go wherever you go. Tall glasses of champagne. Hold still. We look amazing. Dancing in a yellow dress. The creek. You might be looking for reasons but there are no reasons. Slipping nail polish into pockets. I don't want to hurt you or anybody so please just forget about me."