It was everything that she hadn't expected. For one thing, it was certainly warmer, the coldness from earlier melting away. Now, she felt neither hot nor cold and could not quite put a word to it - no one had ever seemed to think of the absence of temperature before.
"Anna," Elsa sobbed, "no, Anna!"
No, Anna herself thought. No.
She could not peer down to look at her sister, her eyes remaining forever affixed on her hand and the dark, cloudy sky above her. Snowflakes still fell, and Anna could only wonder if they would ever stop.
She could just barely see Kristoff, and he stood just as still as her, his mouth open. She couldn't see his lower body, nor could she see Sven. If she hadn't seen her friend running to save her across the ice earlier then she would have thought that he was a ghost.
You said that ice was your life, Anna thought, though she couldn't remember who said it. In one thought, she could hear Kristoff's voice saying it. In another, she saw her sister, standing tall and proud in her ice dress, looking both perfectly akin to and completely out of place in her ice palace, speaking first those words and then telling Anna that she wanted (needed) her to leave.
Her heart, she noticed slowly, did not beat either. It remained ever still, just like the rest of her.
It was certainly one thing to see Elsa use her ice magic, and another to feel it, let it be a part of herself.
Maybe Elsa was touching her, though Anna could hardly tell. The ice was strong, cutting off whatever feeling she might have had left for the skin of another.
The top of Elsa's head obscured Kristoff, bits of platinum blonde hair running through Anna's range of vision.
"Anna, how could this happen? How could I let it happen? Why did I do this?"
Even if Anna had any way at all to communicate with her, she wouldn't know how to respond.
Anna stood still as a statue (and maybe she was one, she realized).
"Anna..." Elsa continued to sob.
Still.
Trapped.
Frozen.