If "everything that comes out of your mouth is a lie" according to her.
And you called her a b****, you must have been lying.
So, if you're a liar, she must forgive you for the name calling.
However, if you are not a liar, that makes her a B****..
She wins the debate on your personal character either way..
You're a liar, or a namecaller..
yer screwed..
unless...you take her side on the original topic, the one you were told to drop.
a simple "you were right about ..........." might do the trick.
Doesn't matter if she is right, or wrong about it...she's right....got it?
Good luck..