Ever considered trying the "therapist" type of response with her. Such as " I hear you saying/You seem to be saying...........", or " you seem to be feeling......" and "how does that make you feel....." also "by telling me this you want to accomplish........" Just keep turning everything back on her without reacting.
One of my favorites is the sarcastic "Oh, Wow, Really. Is that all? What else you got?" and then laugh.
One of my favorites is the sarcastic "Oh, Wow, Really. Is that all? What else you got?" and then laugh.
Being told you're delusional does not necessarily mean you're mental.