Woman's body found off Kalapana

[hikatz]

Questions,
The police obtain a search warrant, searched the camp site and took photos.
Would they have collected any evidence showing that Bo and Brittany had stayed there that night or the previous night?
Was there any garbage bag found, any evidence that would show what they ate, or if they had company?
Bo, did he have a pen with the journal, was there pens at the campsite and in his backpack?
Did they match any of the pens, ink color, to what was written in the suicide confession note.