"Any prior communication by Cassie that does not reflect these dates is simply a difference of relating an answer to a question misinterpreted by Cassie or poorly posed by the inquirer," Bertolino said."
When was the last time you talked to your brother? Yep, tough question to understand. I would have been completely confused. (Eyes rolling)
My hypothesis: The sister picked him up from the campground and spirited him off somewhere. She’s in on it IMHO.