Take the hits and keep moving forward.

[azguy]

Your possible reply sounds reasonable, but be aware that she is trying to draw you into a further conversation while you are still rather emotional about this. If you are not ready, simply repeat your request. If it helps maybe say "I would like to take a week to think about it, and then talk." or something specific, so she doesn't feel left hanging.

She is looking for a reassurance that you understood her pain. That is okay, but until you have your own hurt under control, I suggest not trying to address hers. You want to talk to her in a loving detached way about the problem, and it's completely okay if you are not there yet.

Bottom line: Do your best to make this a constructive conversation about what you and she can do better in the future.