It wasn't like Anna had done it on purpose! It was down to Elsa being evil, and that thing inside her might've gone colder when Elsa'd frozen that little part of the wall and... yeah. Pinning the to the floor was unexpected, but jesusfuck did she ever not care!
Sure, maybe in the morning, but right now? Right now, she was kind of focused on nothing but the insane pleasure this was bringing her.
Shane had no idea how she was meant to react to that. Weird, weird things were kind of the order of the day here, but... "...You know what? I don't want to know. Ever."