Loki arrived before Uriel got any kind of response from Odin. She thus turned to look at her brother's brother -- Loki probably qualified as a brother to her, too, but she suspected Loki wasn't any more enthusiastic about the idea than she was -- as he spoke.

"Serious about what?" she asked, looking from Loki to Odin, confused. Why was she apparently the only one who had no idea what was going on?