I agree, if she was inside the trunk, it would be more obvious, at least that is how I feel.
As far as the unidentifiable, that is rumor so far
I think it is unusual that it took so long for police to let family identify her, even though family stated on SM that it was her before formal ID
I haven't seen any indication that family ever did identify her, but rather, that her identification was confirmed through autopsy. Do you have an indication from somewhere that family eventually identified her?