If Fiora Longs For A Worthy Opponent...

Then why hasn't she fought the Grand Master himself . If she really is looking for an opponent, since she never loses won't, she look outside of fencing to get a challenge. And if she rather stock to other fencers isn't Jax the master of all weapons? So he could fight her with her own form of fighting. I just want to know if they ever interacted to explain why they never fought or if they might have a future one.