Even though she was a runaway, it appears someone unseen was with Amanda. The smokiness appears to be spiritual presence called "ectoplasm":
"This picture was taken back in 1999. I was fourteen years old and had ran away from home. I took my dog, Daisy with me. My boyfriend at the time, took the picture. I hated smoke so I wasn't smoking and neither was he. We were staying at an old, extremely run down hotel, where I was cleaning rooms for payment to stay. I always wondered about this picture and what was in it, especially since my dog seems to be looking right at it. I saw this site and saw other pictures with the same 'smokiness' in them. Maybe, it was my guardian angel in my time of acting out! It's probably the only reason I'm alive today!!"