And what do you do if the TD doesn’t know/won’t enforce the rule? I assume there is some reason in the above case that the TD didn’t adjudicate against my wife’s opponent.
Alex Relyea
Then you sit down at the board and live with it. Maybe you avoid that TD’s tournaments in future.
there’s always the appeal process - which will earn the TD a reprimand, but won’t change the result of your game.
It should be noted that 18G1 is appropriate only if the opponent is being blatant about it – repeatedly making a move and then leaving the board to wander around, sitting there and thinking when he has only one legal move, etc. The TD should keep in mind the possibility that the player doesn’t realize that he’s lost, or harbors some crazy notion of a swindle. If a player was being blatant about it, I would first tell him to go back to the board and stay there until the game was over. If that didn’t work, I’d consider harsher action.
Players who are bothered by this sort of thing should try playing postal chess against weak opponents who keep going a piece behind. That tends to build patience. Or sometimes an aversion to postal chess.
I was at this hypothetical tournament. Did the “complainant” ask the TD to intervene? I agree that it was unsportsmanlike behavior.
When GM Gufeld would be a piece up playing a Simul against a player who had absolutely no counter-play he would just bunch the pieces and declare “My friend… you lost.” This might happen 2 or 3 times in a 20-25 board simul. Eduard didn’t want to waste time and energy when other more even and interesting positions warranted his attention. The “forfeited” players would usually just shrug their shoulders… 
Frank K. Berry