Tank

Nancy yawned and looked at the door in front of. She knocked and rubbed her eyes waiting for someone to answer. The door opened and her best friend answered. She smiled and invited Nancy in. She saw Cassie's alarm clock with red illuminating numbers reading 7:00. After a few hours it became dark and Nancy yawned again. 
"Hey Cassie, are you tired?" She asked and Cassie bounced over to her full of energy.
"Nope" She said and Nancy giggled, brushing away the exhausted feeling. A hour passed and the two had retreated to Cassie's basement to play pool. Nancy was getting the pool sticks when she noticed Cassie's new fish tank. She saw assorted fish swimming around and asked Cassie about the new tank. "Oh that? I got it a few days ago, pretty cool huh?" She asked and Nancy nodded. Cassie and Nancy played a game of pool and time flew by. Soon it was 9:30 and Nancy was beginning to dose off. 
"Hey Cassie are you tired?" Nancy asked and Cassie stopped and thinned about it for a second.
"Not really but if you are you can spend the night and make our poker game a different night" She said. 
"No I'm fine" Nancy said and Cassie nodded. Cassie was about to put back the pool sticks while Nancy went to grab the pack of cards for poker night but stumbled and pushed  Cassie into the fish tank.  Cassie screamed and used her hands to cover her face but her head bumped into the sharp corner of the tank and made the broken glass pierce her skull, causing any life in her to vanish. Blood pooled around her body and soaked into the carpet. Nancy stood there quivering and shakily called the ambulance, crying in sobs to the lady. Hours passed and Nancy had headed home after the medics announced Cassie dead, causing Nancy to burst into almost s endless frenzy of tears before finally settling down and gathering her composure once again. Nancy entered her home and set her bag on the floor. She sighed and yawned tiredly before walking to her bed room. Suddenly someone put their hands on Nancy's eyes, blinding her. She could feel them pressed against her back and she shivered against their coldness before she heard her best friends voice whisper in her ear.
"Are you tired?"