Loki, then, stood by Katie's head for a long moment, petting her neck, murmuring to her, getting her used to his voice and getting her used to his touch, and maybe, if he was lucky, she wasn't going to get irritable and bitey as soon as he got the crossties off. Then, instead, he had his hand firm around the reins just under her chin, nicely centered, the rest of their length gathered up in his left hand, where they'd stay out of the way and neither of them would be stuck tripping on them.
And all he had left to do was ... stare blankly at Sif, for a moment.
"Maybe you should lead the way to the ring," he suggested.