@rice Tell her to fuck off and to stop trying to dictate your life as you're specifically acting opposite to how she would because you'd kill yourself before becoming what she is, and to stop making you look like a retard by asociation.
It doesn't matter if it's true. Works much, much better if it's in public. It'll anger her but also humilliate her and force her to stop if just to save herself the embarassment. It worked for me.