He felt her hand on his cheek, felt her pull him to face her and he complied. Loki would refuse Idun nothing. She was his dear little sister, even if not by blood. If she wanted answers, she'd get answers. If she wanted action, she get action. If she wanted his attention while she gave advice, he'd listen. Loki respected Idun, possibly even more than he did Thor or Odin. While Odin was his blood-brother, Idun was far more like family than Odin would ever be. Mostly because Odin did thinks as they suited them. Idun was trustworthy.
Wholly.
Utterly.
Completely.
Trust was a huge thing for Loki. It was rare for anyone to trust him and when trust was placed in him, he did his best to try to not betray it. Well, as much as he could as was within his nature. And even beyond that at times. “I hope you are right,” he said, blue eyes looking into her with a desperate plea for hope.
Every cough, every whimper, every single sound Hel made in her sleep while Loki kept vigil instilled a panic in him. Perhaps as she got older that panic would wane and she'd become more resilient.
What stuck with him most, though, more than the hope she gave him was that she believed in him. That was a rare blessing to find in Asgard, for someone to have faith and trust in him enough to wish the best for him and his children. The cold looks would ever be present, not only because of how his children were but who his children were the children of. Himself and giantess.