Frigg watched and listened nervously as each of Odin's sons spoke in turn. She would not say she was disappointed with their answers, she wasn't. There was a part of her that would have rather have seen the Trickster rebound than roaming the world free, but that was not to be. It was not the way of things, of this she knew. He was free and that was as he should remain. The prophecy, and what Frigg knew herself about the fate of the Trickster did not involve him being rebound.
That and she knew Odin personally would not want it, if his behavior was any indication. Had her husband wanted Laufey's son kept restrained he wouldn't have bothered speaking with his old friend. In fact, she wasn't entirely sure her husband would have wanted him bound in the first place for any other reason than to maybe mellow him out for a bit. Sort of like a divine time out.
Really, Frigg thought the Trickster had been quite out of control toward the end before he was bound. It started with Baldr's death and he moved in a drastic downward spiral until... well... it was unfortunate that Sigyn's sons died. “I do not think,” Frigg said carefully, “that rebinding him is an option.” It was a curious response from she who hated him so much. Yet, it was a logical one.
“We have all lost much thanks to him, some of us more than others,” she looked first to Tyr, then to Hermod and finally to her her husband before continuing, “but he has lost at our hands as well. Very few of us,” Frigg said in a low voice, “can say with any certainty that they have not contributed to his loss in some way or another. Even if that contribution was nothing more than turning a blind eye.”
She grew quiet for a moment and reached for Odin's hand as discreetly as she could. “I feel he should be left alone, if that is what he desires. If...” The Lady of Asgard hesitated for a moment, closing her eyes as she spoke his name for the first time in a very long time, “Loki doesn't want war, then I fear pursuing him will incite the desire for war within him.”