The loss of her son and collapse of her fourth marriage soon led to a cause she champions: ending homelessness. She says that when the bottom fell out of her world, she went to church.

"I was praying, 'Who can I help that's more miserable than I am?' And I got this thing in my head, 'Help the homeless.' I was like, 'You didn't understand. Let's try that again. A different message, please?' And it kept coming. So I thought, 'OK, OK.' "

So she traveled the streets of San Francisco and was haunted by what she saw. Steel set up an outreach team called Yo! Angel! and goes out about once every month, incognito, handing out sleeping bags, food and toiletries.

"I can't stop," she says.

Even so, she won't leave her typewriter for too long.