Vaginal Silicosis 

An irritating, disorder that can occur in both men and women. Known and diagnosable by the common person by identifying common traits such as excessive whining, complaining and generally acting as if one has sand trapped in the vagina. Those suffering ffrom this affliction tend to make others annoyed and irritated. Etiology of this disorder is unknown, though recent studies have identified "bitchyness" as a risk factor. Treatment options are limited and therapies available tend to be both painful and ineffective in long term resolution. Common name: Sandy Vagina

Her behavior might be a symptom of Vaginal Silicosis.
She's so pissed off ...she must be suffering from vaginal silicosis.

Vaginal Silicosis by Ben Sturgeon May 14, 2008