I think the 3 workers on ship that befriended her are the ones that took her. There was some sort of computerized time stamp for when she went to her room. It was 5 minutes after her brother.
Who could get into her room. (someone from the staff)
I think you could be right, Rippersnapper. The last person Amy was seen with, was a member of one of the ship's bands. She was seen with him, on an elevator, the morning she disappeared.
The C & C bar was mentioned in the Amy Bradley case. That is a huge link with this case.