Don't forget the comma between "spelling" and "smart arse!" Or the incomplete ellipses after "arse!" Or the period between "spelling" and "what's!" And to capitalize "what's!" Or to end your sentences with a period or a question mark!
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").