I’m not sure what you said to her when you were angry, but it kind of did the trick of shutting her out — unfortunately, she had one foot out the door, anyway, so your anger directed at her didn’t help. My advice is to send her a huge bouquet of flowers. Something really impressive, to change the mood. Apologize graciously in the card, and wait for her to call and thank you for the gift. If she does, change the tone of the relationship. If she doesn’t, you tried.