Nerf Fiora

So i just experienced why the champion Fiora, is broken and needs a heavy Nerf. My main concern is that at lvl 15, With only one life steal item Ravenous hydra and NO ARMOR she soloed Baron nashor. Now that alone is a feat that shouldn't be able to happen. Afterwards our team knew that she had to be focused down. But, sadly we couldn't kill even though she had no defensive items or anymore life steal after hydra. A whole team of five could not burn through her life steal. i lost a ranked match because of this and id like to bet others have as well, please try to balance her right.