After the revelation that Sigyn was, in fact, a Frost Giant, she didn't display her true heritage to the rest of the team, and Loki felt bound by her secret, captured by the hidden things they both kept within them.
For years, neither person mentioned it, and the group was left none the wiser. Even Thor, with his overpowering urge to know as much as he could about his friends, remained oblivious to his sister-in-law's secret, and when the chance for her to tell them arose, she held back.
It was common knowledge, as it usually was, that Sigyn's rounding stomach was the center of attention, and that its size meant more than the result of overeating, and the electric hum of excitement throughout Asgard was palpable as the Avengers visited when they could. Loki thought that it would be best if his wife was cared for by doctors of their realm, and each passing day carried with it the threat of something going wrong, which Sigyn was feeling with great intensity.
Months and months went by, all filled with Sigyn's motherly worries, and Loki soothed her as best he could, murmuring to her late at night as he smiled, fingertips brushing against the skin of her stomach with tenderness, her silver eyes bright in the darkness.
"What if the baby is blue?" Sigyn had asked one night, tones hushed beneath the covers, her face exuding anxiety. He'd laughed at her, completely amused, and the indignation in her pout had stopped him in his tracks, his emerald eyes shining with sincerity.
"I'm assuming it will be, since we're both blue," he'd replied seriously, and she'd shaken her head sadly.
"Everyone will know, and they might not love the child like they should, and-"
He'd put a hand to her mouth, gently running a finger down her cheek, shushing her.
"They know I'm a Frost Giant, and the team went from hating me to considering me their friend. I think that they can handle a child that looks like us."
She'd given him a tired smile, wrapping her hand around the one over her mouth to pull it away, and she'd kept them entwined between their chests, snuggling closer to his cold skin to warm herself, which hadn't made the least bit of sense to him, but he'd smiled anyway.
"I'm going to tell them that I'm a Frost Giant, and soon."
And when Sigyn, casually splayed out on the couch of Tony Stark-visiting the tower for a brief moment-, had closed her eyes, her near translucent skin bleeding into a dark blue, opening her mirrored eyes to display their crimson hue, the whole team had jumped with surprise, yelling out exclamations of shock as Loki had looked on, both amused at their reaction and completely grounded by the unsurprised gleam in his brother's eyes, the calm understanding lying in his steady expression.
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