Duckdeamon re I never got why she ended things with will (long before he died?) it seemed to be out of guilt about her time and attention for her DC. I agree, she was crazy. I think it was shock at thinking Grace had disappeared and Peter pulled out all the stops to find her (yet good old Kalinda came through for her).
I think in the end Alicia sacrificed her love for Will for her ambition. She has become quite power crazed! Not as 'nice' as she used to be. I think it is because so many people want her to be at the top, she has bought into it all.
Bishop is going to so control her!