Some Humble Fiora Rework Suggestions

Her Q should be able to apply the slow from her E, but not the crit. That way you could E, Lunge to slow and possibly proc a passive, immediately crit, and run away. I feel like this could help her out greatly with harass and chasing. If your goal is just to get in poke 'em in the arse and get out fast then this would definately help you out. Especially very early in the game on when you haven't built any attack speed and it actually takes a little bit of time to land both of the E empowered attacks. You could just perform the above combo to deal reasonable damage without having to stay for too long, and with your passive speed buff and the slow from E it would also provide easy means to disengage. If you're hunting someone down in can be a bit of a pain to dash in and activate E only to have them dash, hop, flash, tunnel or what have you away before you can get the slow off that you need to chase. This way you would have a reliable slow at the cost of one sped up auto and the auto reset from E. I just think it would make Bladework a bit more satisfying of a skill and possibly help out her early game.

As for her ult, it seems a bit too short. In a fantasy sense it seems like instead of striking strategically where and when it counts you're frantically trying to hit the points before you die or they run too far away. I would suggest shortening the duration of the ult to 6 seconds down from 8 and make it so that hitting one of the 4 vitals extends the duration of the ult by 1.5 - 2 seconds.