She laughs because his fingers tickle right there, and cause her to curl in just enough to make a little noise, moving the blanket as she does.

"Oh, just for practicality, of course," she murmurs, slipping her fingers underneath the strings around her hips; she's worn stockings and garters before, and has enough sense to put them on underneath panties to facilitate actually being able to take them off. Just for the hell of it the rosette choker around her throat gets unfastened too, and tossed aside.