A Sudden Twitch

I... I felt a cold shiver down my legs. When I tried not to shake, my right fingers suddenly twitched all on their own. Oh no... am I moving? A tiny rustle came from the bow on my skirt, and it sounded so loud in this quiet empty space! I quickly raised my left hand to bite nervously at my thumb, wide-eyed and holding my breath, terrified that any little sound might cause something awful to jump out from the dim shadows behind me.