If I understand what you are saying, since riposte is a follow-up to a successful parry, my attack doesn't show, and the riposte message shows instead, followed by all of the other normal attacks in the round...?
Just seemed odd that it happened three times exactly the same way, especially since I normally get at least two, if not three attacks every round, and if I understand what you are saying, that meant I only got one that round for some reason. That is what made it stand out so blatantly, just seemed like the rest of my attacks were prevented by the riposte or something.
Also of note, that NPC dodged, parried or riposted almost every single attack even while I was aiming lower with an axe at mastered. Far more than any other swashie I have seen in combat, even players.
She is now my nemesis.
Edited after I reread the helpfile more carefully