Now that I think about it, this request for a 'talk' is starting to feel like a trap she is setting - she has been extremely upset - so she is going to try to stir up some trouble to give herself and emotional outlet for these feelings.
imo-i agree-they like to start things so they have an excuse to explode.
you could try the DEARMAN approach suggestions in the lessons plans and see if that helps any. write down what you want to say and how you want to say it-I find I forget once he starts up the ramp and can't think straight. if you can think straight if she goes off on you, then just keep notes for the main points you want to clarify-if any.
I feel for you. stay safe.