I've worked with this girl for about a year and she recently told me she had a dream about me. I was initially excited until she said I killed everyone in the dream, including her. Apparently she was in school and walking down the hallway to her class, she got in the room and noticed everyone, including me, was dead. I had an open vial of something near me, I'm assuming some sort of gas, and once she came in the room she died too. I asked her if any other co-workers were there and she said just me, everyone else had blurry faces.

What does that mean?