Two sentence horror story (1)

As usual I woke up at 3.00 am to do my revision in the living room, I was so engaged with my reading and suddenly I heard someone opened the door and walked behind me to the kitchen, as she passed by she asked me, ‘ still awake?’ and I replied lazily, ‘ehem’ and  I closed my book.   Then, I got up from my chair and walked to my room which is six steps from my work place, as I opened the door, someone pulled the door from the inside, there stood my roommate, nervously I said, ‘good night’, after she walked a few steps, she asked me, ‘aren’t you going to ask me whether I went to the toilet just now?’ and I dare not look back.

(I am looking forward for feedback and encouragement.)