How Long Has It Been Since You Last Visited?

"I know i should be moved, but i'm not. Apart from our great matter, which i don't yet know how to put into words," he writes. "Why have you come? You can't know much it hurts to hear you say that", she adds. 'When did you start growing old? Why didn't i notice? Is it the constant insomnia, the lack of appetite?' He asks his mother a series of questions before taking her on a walk.