She corrects me too.She has admitted to some difficulty with language since childhood. And I have seen her spell suit with a terminal e several times, but never commented on it. I never do unless somebody writes something like "Your an idiot." Also, if English is a poster's second language, I try to be helpful when I see errors if I trust the poster to understand my intentions and not be offended.
And I mock meself for being a "grammando".
Don't take it too seriously.