Often in fiction, the time traveler does not merely fail to prevent the actions, but in fact precipitates them (see predestination paradox), usually by accident.
Brody returns to freefall: his rescue and final conversation were a forced illusion created by the time traveler.
The old time line remains unchanged, with the time traveler or information sent simply having vanished, never to return.
However, this would leave the time traveler only seconds to fix the timeline.
The time traveler tries to warn her about something, but disappears without explaining what it is.
Later in the story, the time traveler moves forward to a dying earth beneath a swollen, red sun.
The time traveler appears and reveals that he actually created the dark future and her mission was to prevent it from happening.
Unfortunately, the villagers mistake the time traveler as a demon and attack.
