I am cautious to advise you because this sounds delicate! You are walking a very fine line between creating the boundaries and space for yourself right now and between also letting her know that you are open to hearing what she has to say.
I never hurts to take more time, so I think you did the right thing by giving yourself more space. If she wants to talk, she will wait. So give yourself the time you need to think about your approach.
Perhaps when you agree to talk to her you do so and just listen and here what she has to say? You don't have to answer questions right now; give yourself time to think and process. Maybe just validate, thank her for coming to you, and let her know she has given you a lot to think about. Remain patient and cordial. Then exit.
Hopefully a vet can chime in here! Remember she may be softening, or she may just be feeling down today. You can't know yet.
-Blu
“Forgiveness liberates the soul. It removes fear. That is why it is such a powerful weapon.” – Nelson Mandela