So many potentials from her announcement. (Im in UK so some of these may be wrong) 1. Her fall-out with Mr T has made her vulnerable in a Kirk kind of way 2. She has no longer any purpose since she can't lick his ass any more. A useful idiot out-living that usefulness 3. Jumping ship, before it sinks (at mid-terms), such that she's not sunk and could come back. 4. She knows she'll be dumped at mid-terms and wants to avoid that humiliation. Bullies always run away when faced with pushback or accountability. My 2c