Of course you couldn't leave him. [How could anyone leave someone they loved in that person's last moments? She'd have stayed too.

She pulls out her handkerchief and offers it to Clara so that she can dry her eyes.]

Is there anybody else who needs to know? Did he have any family? Other friends at home? [It's so much easier to focus on a task than on her grief. If other people need to be informed, they can talk about how best to do it, what exactly to say.]