I am with her on FB as well, although maybe not for long. This is one of the rare occasions when she has not posted one word there about an action of hers.
You should continue to be her "fan" if you're reason to "unlike" her it only to punish her. I learned that a while back. There was a time when I would hesitate to be Bill O'Reilly's "fan" but now I see it differently. Unless you are a fan you cannot post criticisms or suggestions or links to stories he ignores on his wall.
Believe me the most far left people are out there are "fans" of Sarah Palin and the others only for the purpose of bashing them on their own Facebook page. If we "unlike" republicans, the left have free reign and could actually cause the candidate to get a false sense of support on an issue that in reality conservatives would be very against.
By the way, on my fake FB accounts I'm a fan of Barack Obama and I'm always posting comments comparing his words then to his actions now. I even posted a chart (I found here on FR) showing the unemployment rate going up since Reid and Pelosi had taken over back in 2006.
But if you want to "unlike" her because her messages showing up on your wall are annoying, well that's a different story.
I have noticed on Brewer’s wall you cannot start your own thread as you can on some others. Situations like that I find a thread she started and make my opinions known there in the comments. If I cannot find a thread on the issue, I just post my opinion as a comment (even though off topic) on their most recent post. :)