How to Deal with Soraka?

I usually don't see her played, but when I do, it seems like the game is already 'gg' because it I can't out-trade my laner whenever they go to fight me, and I can't focus her either because then I get massacred by said ad, or the jungler comes in and destroys us. It feels to be impossible because the second I get into the lane, the ad attacks me, and I have to either back or run away. Even if I'm winning in cs, which is usually the case because they ignore farm to attack me, it doesn't matter because they usually end up killing my support, or killing me. In addition, I can't stop dives because Soraka is always in the background healing the person who is taking turret aggro. I don't want to have to waste a ban on her when I feel there are more menacing champions to have to deal with, such as Xin Zhao, Zed, Tahm Kench, etc. Is there any way I can effectively win, or any method I can use to punish them for being so aggressive? They almost always like to be on the outside of my turret, but sometimes my jungler doesn't gank, so they aren't a reliable source of help in my eyes. Obviously, not dying works as I will hold the gold lead in cs, but that's virtually impossible if the Xin Zhao, or whatever the jungler may be, comes in and is able to run past my turret thanks to Soraka healing him a bunch.