Dear Sister in Law,
You're a dirty bitch. You know it and I know it. Back the fuck off. YOU are not my warden, though you certainly whisper all sorts of shit in my warden's ear that makes my life even more miserable than it already is.
You know what an asshole your brother is. You've seen the way he's clipped my wings and crushed my spirit. Why don't you quit fucking helping him along, hmm?
Because I swear to God, you twisted, horrible little person, if you drag my children into your bullshit like you tried to do today you will not know what fucking hit you.
You think I'm a little mouse, and in the past you may have been right. It's my fault; after all, I've allowed myself to be verbally, mentally, and spiritually abused for the last seven years and done little about it. I get why you think I'm weak; I've been weak. I can own that. But here's a fucking newsflash, Sister, fuck with my children and you will see this mouse turn into a lion. And my bite is MUCH fucking worse than my roar.
Back. The fuck. Off.