Not OP, but I think I found the item that OP's classmate is referencing.
http://www.breitbart.com/Big-Government/2012/10/12/Food-Tent-Displaying-Obama-Campaign-Signs-Erected-Outside-Ohio-Poll
I am hoping OP will explain the "cheese" reference. Is that what has you upset? Or is it what this article is saying about the early voting in OH?
I am all for unfriending the following types of people on FB:
- people you don't know, but somehow you ended up as "FB friends"
- people you don't like
- people you have no contact with either on or off FB
If this person is any of those, then unfriend her and be prepared to say why. But I don't think 1 weird post is a valid reason.