Should I wait a couple of days and say simply "I'm sorry you feel that way."?
It is a response. It's standing up against what she said without arguing, it's not getting defensive, it's validating and supporting her feelings, it's calling her on mind-reading...all while remaining in control of myself.
It is hard when she says that it's BS that I ever loved her.
Or "I did and do love you still, and am sorry that you feel the way you do."?
"Always go straight forward, and if you meet the devil, cut him in two and go between the pieces." - William Sturgis, clipper ship captain, 1830's.