Wow. Actually, I think its better that they weren't fighting. Your W wasn't in a stressful situation (minus her adulterous behavior but you know what I mean...), she is choosing to leave for YOU. Choosing to kick him out, realizing its not 'real' love. This is all good. Keep up your strong front, requiring actions from her, etc.
PS: I have never felt such insane jealously as I have since H confessed.
