Was Fiora scripting?

I just played against a silver 3 Fiora that plays almost exclusively ARAM games. This Fiora parried 5 exhausts throughout the game. I have played for years and never seen this happen even once, but literally 5 different times during the game, at random times during fights. Just curious if anyone has any thoughts. Was this just a challenger smurf, someone getting ridiculously lucky, or a scripter? I assume it's just the fact that I am a bad player, that they were able to parry an ability that has no cast time or indication that I am about to cast it