one of the guys goes with them and apparently stays outside the toilett, to confirm that there was no coach or talking on it...and in this case the guy must have seen, that Sabine just washed her hands or sth. similar and reported it...
But I know, thinking logical is something hard for a Caro-fan
Linejudges always go with players, women with female player, men with male player obviously.
I was watching the match, but couldn't hear properly the whole conversation and thought Sabine actually got violation for not washing her hands after using toilet. She pleaded, that she did it and even showed them to the umpire, how wet and clean they are.