Aura

Hello, I am Aura [pronounced 'Or-Ra']

Having turned to the spirt world shortly after dark, I may come visit, so we aren't always apart.  Keep me close and safe or keep me in a cabinet or a safe but throw away the keys and locks, and all the doors locked!

You may not feel me but only see me in your dreams, pitter patter of my shoes I'll be sure not to lose.  You blink your eyes open and I wink, no words are spoken.  My dress flows and moves with the chill in the air, spirits and I, they're everywhere!

Who can see me now?