Great story! Thanks for taking the time to write it up.
As for what I think ... I think ghosts are real, though I don't know what they are, whether they are actual souls, or just "impressions" left on a location by events, or evil, or what. I never thought ghosts were real, though, until I lived in a haunted apartment one summer -- and it was NOT fun or cool. I ended up sleeping on the couch all summer because the bedrooms were uninhabitable, because of the incredibly angry presence of whatever it was that was haunting the place. Only the living room and kitchen were unaffected. It made such an impression on me that when we went to buy our first place, I embarrassed my husband by quizzing the real estate agent at length as to whether anyone had ever died there. I was taking no chances! LOL!
Yeah, that's right.
The angels might protect you from actually getting killed by something nasty like that, but you can't just dispel them by praying real hard. Whatever they are, they're THERE, and they're NOT GOING AWAY just because you want them to.