You didn't know how you knew that Hugin and Munin were valkyrie. They were ravens. You'd only ever seen them as ravens. Now, though, something about them called to you and you felt that they were valkyrie. They were like you.
It wasn't the time at the moment to find out what was going on with them. You couldn't draw attention, not in front of Odin and not in front of your children. You had a feeling there was going to be fallout from this revelation and you wanted your children safely out of it.
This revelation also had to be given to the court now, before Odin could make up some excuse to get out of it. Hela had said you would have to help her. You realized that this was the first step. The valkyrie had died because Odin had forced them to fight Hela. Hela was their patron goddess. There was no way they could stand against her. The valkyrie had been destroyed. All but Hugin and Munin it seemed. You knew from your studies that the valkyrie had wings and had the secondary form of ravens. No one had made the connection, probably because of Odin's meddling. Likely it was magic from Gungnir that made them forget what he'd done.
Until now.
/Narvi, Vali, go with Aunt Sif. Now/ you ordered the twins in a tone that demanded you be obeyed. Your children were mischievous and could be troublemakers, just like your husband. But, like Loki, they had learned when they could get away with not listening and when they had to obey. This time, they needed to obey without question, without complaint. You needed them out of here before you confronted Odin.
You wouldn't see your children in danger for the decision you had to make. The twins immediately teleported to Sif's arms. Sif was used to their teleporting by then and caught them easily, cuddling them close automatically. She looked between you and Loki, trying to decide who had told the twins to go to her. When she realized that Loki was as baffled as she was, she turned to look at you instead. She saw your expression and realized exactly why you'd sent the twins to her. She nodded to you, said something polite to excuse herself to Odin, and left with the twins. She would take them to safety and keep them there.
"What's going on, here?" Odin demanded of you. You were acting strangely and the entire court knew it.
Hugin and Munin shifted on their perches, drawing your attention back to them. "The court is owed an explanation on a matter," you said formally. It was within your rights as princess to make this request. You had to speak carefully to get the answers you needed without getting yourself killed.
Loki wouldn't like it if you got yourself killed again so soon after coming back to life.
"What explanation?" Odin asked warily. Loki squeezed your hand, warning you to be careful. He knew this was important to you, whatever this was, or you never would speak out in front of the court. You tended to keep your head down, even being Loki's wife. But being Loki's wife was what had Odin wary, and what gave you the courage to speak up for what was right.
"An explanation for Hugin and Munin. They are my sister-Valkyrie," you announced for the benefit of the entire court. There were shocked gasps from everyone in attendance. You felt the magic around them. Felt what Odin had done.
/Help,/ you made the request of Loki. He knew more magic than you did. You squeeze his hand and let him see the spells that you did. Without a word and without question, he lent you his power and the knowledge to break the spells.
You gestured to the ravens and snapped Odin's spells. Destroyed the spells that had kept them trapped in raven form for all of these centuries.
They both turned back to their winged-human forms to the outrage of the court. They'd been in raven form for so long that they crumpled, unable to support themselves on legs that were no longer strong. Loki used magic to catch them and ease them to the ground, putting shields up around them. They would be safe while you figured out how to deal with Odin.
A valkyrie should not be treated as those two were. Odin was going to be called to task for what he had done. Something had to be done. Though he was king and Allfather. It was going to be difficult at best.
But something had to be done for how he had treated the valkyrie of the realm.
That was why Hela had sent you back.
