Interstice - the space inside a crack
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She rolls over, on top of her friend and they giggle at her unconscious actions, before carding a hand through her hair.
"Mmm...."
At this, she laughs louder and pokes her stirring friend in the cheek, before resuming to stroke her hair. "You're so cute."
The groan she got in reply was enough to tell her that her companion would be waking soon, and that this would end soon. She treasured the moments when the space between them was so little.
