That's just angry spew on her part. The "just" there isn't to trivialize it, but to say that its completely normal. You are probably not reacting the way she had thought you would...way to 180! It will probably get worse as she starts to realize that her normal control tactics aren't working, and she tries to adjust her own tactics to get what she wants (control of the situation, MBR, etc).
Stand firm, be logical, but don't push aggressively on anything. And keep talk to a minimum. Don't explain all of your thoughts or actions; don't defend your statements or actions. Just be "light and pleasant". It will be a 180 for you, I'm sure, to not explain it all as she spews anger and frustration in your face. The idea is to SHOW her your changes; not tell her.
And LISTEN to her words. Look her in the eye. You don't have to validate everything. "I hear you", "I understand your frustration", or just a nod of the head with full, non-angry eye contact is enough. But if she keeps going angrily, you can make your contact short. "I'd like to hear more later" (never say "when you calm down...for some reason "calm" mentioned to angry people has the opposite effect).
When she speaks calmly to you, reward her with better validation. "So what you're saying is..." and compliments. "I like your idea of..." or "That's a good point. Maybe we should...". Reward good, ignore (or at least be unaffected by) bad behavior.
You're doing a good job and its throwing her off. Be firm, like you're doing. But be careful. She might change tactics in her desperation to get control, and you also might be tempted to change your own in response. Right now, stand firm. Good luck!
M-51 H-54 2D-27 and 25 M-26 yrs Bombshell and IHS 7-29-15 He moved out 10-3-15 D filed 1-27-16 D final 10-27-16