Oh, I get it now. I wonder how many missing unidentified are out at Hart Island. Did the sister say that Mitchel was definitely going to stay with the friend in Rochester? I missed that. I thought the mother (or sister, I've been obsessing over this case since the weekend) said that she called the friend in Rochester because she just considered it a possibility that the two may have travelled there because of Bonnie's letter saying she wanted to travel. Maybe I'm mixing it up or this is information I haven't found. From what I've found, it sounds as though Mitchel was planning on coming home, having told his friend that he picked his ticket up from that he would "See you Monday."
Sadly, I also believe they never got out of Narrowsburg. I think that they were picked up quickly by the wrong person who was local and hid the bodies very well, probably on their own property. I happened so quickly and there are just no witnesses. Anyway, thanks for answering me. Your English is perfect, btw. I know because I'm an ESL teacher!