If you still haven't figured it out yet:
Delete her.
It will make things so much easier for you.
I did it with my ex.
Then I deleted her friends.
Then I blocked updates from anyone who would be with her, posting pics of her or even heavily reminded me of her.
The last part was strictly just to make things easier on me, because at the time i did not want to even see her face.
She unblocked you so she can stalk you, not so you can see her stuff.
Are you gonna give her the power to decide how much info she can get about you?
You are going to let HER decide?
Just delete.
Edit: it isn't even about controlling what she sees. If you do the steps I said it will make getting over her a lot easier, because you won't be bombarded with the trivial **** she posts on FB, or have those constant reminders that she is somewhere, without you.
btw, girls rarely use FB to show the bad parts of their lives. They will only post the very best, exciting things. They use it to try and show how great they are, which is pretty much why FB exists anyway.
There are no positives to keeping her on your friends list.