Gard is Valkyrie

Gard finished her own mug and examined the cast on her arm. "Close one."
"Little bit," I said. "Can I ask you something?"
She nodded.
"The grendelkin called you a Geat," I said.
"Yes, he did."
"I'm familiar with only one person referred to in that way," I said.
"There are a few more around," Gard said. "But everyone's heard of that one."
"You called the grendelkin a scion of Grendel," I said. "Am I to take it that you're a scion of the Geat?"
Gard smiled slightly. "My family and the grendelkin's have a long history."
"He called you a Chooser," I said.
She shrugged again, and kept her enigmatic smile.
"Gard isn't your real name," I said. "Is it?"
"Of course not," she replied.
I sipped some more of Mac's award-winning dark. "You're a valkyrie. A real one."
Her expression was unreadable.
"I thought valkyries mostly did pickups and deliveries," I said. "Choosing the best warriors from among the slain. Taking them off to Valhalla. Oh, and serving drinks there. Odin's virgin daughters, pouring mead for the warriors, partying until Ragnarok."
Gard threw back her head and laughed. "Virgin daughters." She rose, shaking her head, and glanced at her broken arm again. Then she leaned down and kissed me on the mouth. Her lips were a sweet, hungry little fire of sensation, and I felt the kiss all the way to my toes. Some places more than others, ahem.
She drew away slowly, her pale blue eyes shining. Then she winked at me and said, "Don't believe everything you read, Dresden." She turned to go, and then paused to glance over her shoulder. "Though, to be honest: sometimes he does like us to call him Daddy. I'm Sigrun."

Side Jobs, Heorot, Page 146-147