Maybe it's merely in a department store line that will not move! Or two towns over. Perhaps it's in another galaxy or dimension. Wherever it is, your character is stuck there- so stuck it feels like they'll never get out.
Who do they call for comfort? Do they pen a note to their love? Is the note the only thing that's ever found of them again? Ack....the possibilties...they're endless.
Good luck - hope the prompt brings you words