It's almost
impossible for a public official or public figure to win a slander or libel suit, especially after the Larry Flynt-Jerry Falwell case. If it was as easy as she seems to think, half the Bush administration could have sued Michael Moore and George W. Bush could have sued CBS and Dan Rather over the forged national guard records.
I'm willing to bet, however, that Sherrod's attorney will have some sort of tie to either the DNC or the Obama administration and she won't actually have to foot the bill for this. So maybe she'll get a settlement just because it will end up more expense for Breitbart than her to try what should be-for her-a losing case.