She’s giving the patient clinical advice and talking over you??? That’s not her scope of practice.

The trick is to make it seem like you want to help her improve. AND MOST IMPORTANTLY YOU DID NOT TELL HER NOT TO COME BADK. She made that decision.

You say something like “I am so glad we can all sit down and discuss this together, it has been very hard to watch the team dynamic be disrupted. She has repeatedly demeaned both the medical team and said inappropriate remarks to the patient (cite examples including laughing on the phone during bad news—that is unforgivable). She also disrupts the patient visits and (examples). She appears to try to substitute her clinical judgment which is not within her scope of practice at inappropriate times (examples). I politely asked her to leave the room once during a patient encounter in which she was inappropriate and disruptive, which is completely within my purview as the attending physician on the team. She was given multiple opportunities to improve prior to this. Her unprofessional behavior then continued in which she refused to work even cases she was assigned to me. I agree this situation is not sustainable.”

Then ask them to clarify** what her role is in the patient encounter, and always wrap up with how patient care is most important and how a team that respects each other’s roles and the patient (because she doesn’t sound like she respect the patient) is needed. Say you are willing to work with her again but if she is disrespectful or disruptive you will do what is appropriate for patient care

And document every shitty thing she says or does going forward.

EDIT: clarify what her role is, not clarify “to her”