Irelia

How does one deal with late game irelia? She can't be 1v1ed MOST of the time(I was zed with full build which included a scimitar for her pesky stun yet i still couldn't kill her. I ulted bork ignite removed her stun got a whole bunch of autos off during my ult, she barely lives, her stun is up AGAIN and escapes). If you gank her shes almost impossible to cc due to her passive . She builds one or two damage items and goes FULL tank and still does massive damage late game due to her q and w. My main complaint about her is her stun. Even with merc treads her e seems to last an eternity. I know shes been nerfed a decent amount in the past but I still feel like she is super strong, especially in solo queue. My only wish is that they reduce that damn stun to like 1.5 seconds so with 35 tenacity the stuns becomes .975 seconds so that's a .325 second difference. This believe it or not is rather significant because an irelia thrives off AS to get more of her W procs off( comes from her trifroce bork build) On top of that the stun has a flat 8 sec cd. If you manage to have a FrozenH,SpiritV and nag Blue buff that's 4.8 seconds minus the actual stun duration of 1.3 seconds which is 3.5 second effective cd. You are pretty much stunned every 3.5 seconds. I find this really annoying to deal with on top of her 6(3.6 with stated build) sec cd q letting her chase and stun relentlessly. I feel like the cds and stun duration needs a light tap everything else about her is reasonable.