[...] we could see a garden with green things the size of baseballs hanging from the vines.
"What's that?" I said.
"How should I know?" she said. "Squash, maybe. I don't have a clue."
"Hey, Fran," I said. "Take it easy."
She didn't say anything. She drew in her lower lip and let it go. She turned off the radio as we got close to the house.
noted for the emotion (petulance, tension) communicated solely through dialogue, not adjectives