She can be only one sort of bird, a swift, bad at takeoff from the ground but tireless and quick in the air - and who needs to take off from the ground when the transformation leaves one six feet in the air from a standing start? It would be nearly as hard to add another creature to this spell's arsenal as it was to manage the swift in the first place. She is satisfied with the bird for now; she slips out of the palace and flies, invisible, for hours, and lets Thor tease her about the assignations that must have kept her up late and left her tired in the morning.
(She sometimes has assignations too, but fewer with the first blush of hormonal need worn away. Sometimes Sigyn, sometimes whoever else. Mostly: flying.)
A few months after she has begun to spend time as a bird (and picked up the idea of teleportation, which will be desperately difficult but not, she thinks, outside her reach) there is a parade. They have these every few decades, on the bicentennial or centennial anniversaries of things. The queen, the king, the princesses, a lot of neatly marching warriors, decorative performers with competent dance steps and pleasing voices and desperately incompetent illusions, all winding around in a slow trek around the capital city to be looked at and wave.
It is somehow even duller to sit in a parade and wave and smile when she could be being a bird.
But she can't, not really, so she sits, smiles, tries to remember without checking her notes what this is the twenty-seventh centennial of exactly, waves her hand at the crowd.
And then there's a crackling burst of light and Frigg, the king, her father, has collapsed from their vehicle to the street.
The smoking staff of power aimed at them is just barely visible in the distance among the crowd. Thor has already seized her hammer; Thor will handle that -
Loki leaps after her father, to duck another blast, to see the extent of the injury. "HEALER!" she cries. "IS THERE A HEALER?"
Fuck, fuck, fuck.
Odds of an 'invisible healer' gambit working -
Gaps in the crowd through which she could manifest an illusory one -
No and no.
Loki bends her head over her father and repairs him completely, and then leaps up, weapon in hand, and goes to help Thor.
(Back at the head of the parade, the king sits up in confusion, and the queen stares down from their vehicle in concern and surprise and growing anger.)
There will be time for Loki to deal with the queen's anger later. First she's going to trip the likely accomplice and pin her to the ground by the neck with a forked Lævateinn. "Put Mjolnir on her," she suggests in a low voice to her sister. "So she can be questioned."
"Are the attackers caught?" calls Odin.
"Aye, Mother," Thor calls back.
Odin gives an order to some guards, who push through the crowd to surround the captured assassins. Out loud in her public-speaking voice, she says, "The attack has failed. The king is healed. We return to the palace. Come, Thor, Loki. Guards, bring the prisoners."
Thor... is still very confused. Some of the guards look at Loki with suspicion as they collect the prisoners, but no one interferes with her.
"Loki," glowers Odin. "Have you anything to say for yourself?"
Does she have anything wise to say for herself?
"I decided a long time ago that I would rather he live and despise me than die not knowing he could have been saved, if ever it came to that."
"Well - I knew that this would be my thinking, if it came to it. I knew that if I had the choice of healing Father or letting him die - healing you or letting you die - or Sigyn, though I didn't know him then - I knew that given this choice I'd rather heal. The Tesseract didn't teach me entire spells. It taught me enough to build them. But I knew that if I needed healing, I'd want to have it - so I built it."
"I told you about how they're the other way around, on Midgard. They don't have any magic to divide up, but everything else, backwards. There's no reason to have it one way and not the other. There's no reason not to have everything both ways. There is no reason why I can't be a healer and Sigyn can't be a warrior. We can, we are, it's only everyone else insisting that it's not done."
"Well, the way I see it there are two general approaches. She can decide that since it cannot be hidden she must pretend it is acceptable to her for me - in particular, anyway, if not women in general - to know magic, and we all proceed as though I had her blessing. Or she can decide that I am to be considered a pariah for my unexpected skills, at which point either she will banish me herself or I will find the proceedings so exhausting that I will leave."
No. She can find Sigyn on foot. Or at least, she can leave this room on foot. If the rumor mill makes the streets impassable for the princess then they will have to be passable for a redheaded boy until she finds who she's looking for.
She inclines her head to Thor, then goes.
"Yes. But it is frustrating for me that it is hard for her. She likes me, she's just always been... unobservant... and it took her this, this moment at which I most keenly need support, for her to even notice that liking me was in tension with anything else that has ever appealed to her."