Its because you messed it up. She had it all figured out while in Fantasy La La land on precisely how this A would go. You went and became a stronger person and took charge of your life ... became the better option and she was faced with the reality of the situation which never lives up to the fantasy.
So either she is gathering ammo for the D, or maybe she is trying to see if there is a OW, I know mine while with OM was cool with that but not cool with the thought of me with a OW ... crazy how this all works sometimes.