perhaps some regret? it looks almost like scooby doo got an extension, it looks like this was here when the hospital was still functioning, the patients tell a story no one will ever really understand or have ready answer to, maybe the3y saw something evil or knows the man with thew horns from experience, or the woman with the red eyes has some regret for some known action only to the past, or the patients knew her all too well, as i have said before the mystery of the mural is something that only the past can explain, but with the building gone as i have come to understand, it makes it all the simpler just to ponder what once was, maybe the answer will come to us someday....