He offers her a hand up, in the hope that she can take that hand and still hold the baby in her arms (so small, is that a real person? Is that really going to become a man?) and not do herself any harm because he's sure she probably shouldn't be out.

Which leaves him in a perfect position to wrap that arm around her shoulder and stare at the bundle.

At Will. "Will."

More staring.

"He's perfect."

(He doesn't mean to sound so surprised. It's been a long wait.)