Her physique was discovered below a mattress, wrapped in a blanket and coated by life vests, ABC News reported.
The Miami-Dade medical expert’s workplace decided she had died of “mechanical asphyxia”.
She and her stepbrother had been travelling with a number of members of their household, together with her father and stepmother. Kepner’s grandparents additionally had been on board.
“We were all having a great time,” her grandmother Barbara Kepner informed ABC News late final 12 months. “I couldn’t fathom why anyone would wanna hurt my baby.”
The grandparents had mentioned that the connection between Anna Kepner and her step-siblings was a cheerful one, including there was “no such thing as steps”.
“It’s all family. It’s a blended family, yes, but that’s not how our family is,” grandfather Jeffrey Kepner mentioned. “Our dynamic is we’re all just family.”
If convicted, the stepbrother might face life in jail, the justice division mentioned.