Another strike against marriage?

At first glance, it appears a contract is no longer a contract if state marriage is involved:

A Long Island mother of three has become a postnuptial hero, after a prenup nearly cost her everything. In a landmark case, Elizabeth Cioffi-Petrakis, 39, won an appeal overturning a bizarre premarital agreement with her millionaire husband. Now she says she may be entitled to half of her ex’s worth when their divorce becomes final.

However, if one read the article, it is readily apparent that isn't actually the case.  A contract induced by fraud is intrinsically invalid.