Don't throw in the towel just yet. If she hasn't acted on it, then she may just be spouting off. I have heard the EXACT same things so many times before from my wife I couldn't even count them. She has never acted on them or except for one time a year ago she had an online fling with someone from her past, but it never got past the computer. I have found that this is usually a defence thing with her, if her feelings are hurt over something she starts verbally flailing at others. Tries to find a button to push, in her mind if she can't make herself feel better, she will make someone else feel bad, then everything will be ok. You did the right thing by telling her what the consequences would be if she followed thru with these feelings. BP or not they are still accountable for their actions. Keep an eye on her & her meds, it sounds like they maybe need adjusted a little more. Try to stay calm thru this & don't let her goad you into a fight that you cannot win.
"The struggles make you stronger, and the changes make you wise, and happiness has it's own way of taking it's sweet time.
Gary Allan- From "Life Ain't Always Beutiful"