The most hurtful grammar nazi attacks are the ones that skillfully combine lessons in possessive pronouns with an unsympathetic performance review of one's genitalia.
Although if she's going to give a lesson on grammar, she'd better make sure she's using the correct verb form of the first-person plural ("so we don't sound like an uneducated dumb fck").
A simple solution would be to not read other people's text messages.
Coca-Cola's Super Bowl ad this year featured a chorus of people singing the classic patriotic tune "America the Beautiful" in a multitude of non-English languages spliced with footage of an ethnically diverse American populace. Some didn't take kindly to the ad's message, taking #cokesucks to Twitter to complain - often in broken, unintelligible English.
