Later? Perhaps. Perhaps not. But it really doesn't matter, does it, whether the exact time he assaulted and abducted her was at 3:57, or at 4:47, or at some point in-between?
Somewhere in there she was still assaulted, abducted, and he put her IN HIS TRUNK bleeding profusely, perhaps dying or dead. And some time later, he removed her from his trunk, and concealed her, where she's never been seen again. He won't be tried for what he did at a specified time (nor will the state have to prove what time) - he'll be tried (and easily convicted imo) for doing it at some unspecified time, whenever it happened.