I think she *did* notice he was tied different from the mere fact that it was way tighter to get off (?? My guess, at least.) But, she was far too distracted to care about it due to the king requesting them for dinner and not being told of that hours before.
I was kinda hoping Courtney would notice that Richard was tied up differently and get angry
╮( ̄▽ ̄)╭ oh well too bad