Obviously all the respondents but one are trying to get you to hire them as agents, so are not exactly impartial. Try googling for the answer; a search on "for sale by owner decline offer" yielded this site as the 2nd result:
http://www.realtytrac.com/for-sale-by-owner/fsbo-negotiations.html
I can't help you any more than that as I have never sold my own home, but just as one citizen of the world to another--consider the source of your answers.
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Consider where she came for advice.
Sarah, your attorney may be able to help you.
- Earlier today