I do think that while women across the board (Desi/non-Desi) definitely have societal pressures to get married, that the single Desi woman (beyond the age of 30) will endure more stigma (as a result of her non-married status) than will the non-Desi woman(unless she belongs to a subset of society in which marriage is paramount, like for example the Mormon church).

Desis tend to assume that if a woman is unmarried in her 30s and beyond, that her chance of having a viable partner-in-life is little to nil. While these same pressures exist in the general American culture, (like the example you brought up from the film _Sweet Home Alabama_ or the example of the film _Sleepless in Seattle_), I think that the Desi culture in general tends to make it even more problematic for Desi females to be single. To use a silly analogy, if a single non-Desi woman is seen as being "less-than" by society, then a single Desi woman is seen as either being more dangerous, or, worse, invisible.

Kudos, by the way, to your grandmother. May all our sisters become such grandmothers (or grand-aunts) to future generations!