Nora almost laughed at his exclamation, but not unkindly. His surprise made her a little giddy. She loved the effect that her hammer had on people.
"This is Magnhild! Mighty hammer!" She flicked it around, and it folded in on itself again so she could hang the thing over her shoulder by its strap. "I dunno, after I started Dreaming, it showed up by my bed, and I... I just don't feel right going anywhere without it." Sort of a security blanket thing.
She set the hammer aside--close enough to grab, but out of her hands so she could watch what he was doing--and leaned way over to look at the engine.