She was sick of conversations with people passing through. Nothing you said to each other mattered a damn… — Tim Winton

It seemed that these were Joneses who didn't need much keeping up with.

Inside his mother is silent at the stove. Her face is shut down. It's nothing new. The table's set. He washes his hands and, newly protected by his thoughts, settles himself into the silence she's prepared for him. He already knows what his mother thinks. To her, the world is a treacherous place. Nothing lasts. People cheat. They leave. They just up and go. Sooner or later they all bolt and you're left on your own, and the look of reproach she gives him now is but a variation on her whole demeanour, the assumption in every glance, every sigh, every mute chink of cutlery, is that he too will leave her high and dry, just as the old man did three years ago. He's fifteen and it's old news. He feels sorry for her, protective still, but he's had a gutful. He wants her to get over it but he senses that it's beyond her.

It's a survival thing, making yourself a small target.