@Meddler, Questions regarding Riven and lethality buffs

With Lethality being buffed and several of Riven's laning counters getting nerfed. I am a bit concerned. The last thing I want is Riven to become too strong. I doubt she will, but if she does I am concerned about where she will be taken. The boards have a lot of very radical suggestions regarding Riven. I think if she ends up too strong potential Q ratio nerfs and maybe Q-E cooldown nerfs would bring her in line.

But many players disliking the champion I love, and not fully informed on how she functions, would rather see her mechanics and design torn to shreds. Riven has been in a mostly healthy spot for a while now. She had some ups and downs over the past year but mostly was stable. If Riven does end up too strong after this patch. What would you look at first regarding nerfs for her? And what is your general opinion on Riven's health in the game?

I know a lot of people only want to hear about unpopular or weak champions. But I would love some insight and peace of mind regarding my beloved rovinlcsbigplay420pentakillboxb... I mean Riven.