Her hesitation did not go unnoticed - but he did not need to encourage her further before she nodded and turned away from him. It did not take much effort to sense her power ramping up as the room grew cooler and began to fill with snow - he scarcely had to turn his senses outward to feel it, a thin sparkle of power that was deceptively delicate for how very strong it was. It would be easy to recognize, now that he was observing it, both physically and with the magical senses that served as secondary eyes seeing only what could not be seen. The snowfall wrapped the room in a glittering blanket of magic, and Loki quietly closed the door he'd opened on his way in, keeping the chill from escaping into the halls.
The snow took shape quickly into that of a being, and Loki was momentarily amused - the idea that with all her power, she was creating a simple structure of snow was an entertaining one. Did she truly not realize how much power she held? Then the snow crystalized further, detail blooming from the frozen sculpture, and Loki's amused smile turned into a genuinely pleased one.
She seemed worried, just in case as if there had been an incident, as if something had happened before. Loki merely nodded, electing not to press the matter.
"Very lovely," he offered, stepping forward and circling to examine the ice sculpture. "You are, truly, gifted." There was a great deal of detail in it - as simple as the theory behind it was, precision of that nature was not easy to accomplish, sometimes difficult even with experience. It was easy to harness power to create a large blast or to form something hulking in a rush of defense, but something as intricate as this was impressive for one without any training.
He looked over his shoulder at Elsa, curious. "Who is she, then?"