The context of the following conversation is Alex stayed home from school, but by the time Jan returned home from work she saw Alex was better.:
Jan says Alex stayed home and did not go to school..
The friend responds I hope he was not sick..
Jan responds When I left for work he was sick..
The friend responds How was he when you returned home?.
Jan responds By the time I returned home from work he was better..
The friend responds Time heals all wounds..