That's because she's not as smart as they are. /sarc
Oddly enough, the Obama people WILL stab Hillary in the back. They can do no other. Liz Warren is their instrument.
Palin has an open door, due to what Bill Clinton will do in retribution for being betrayed. His endorsement of Obama was part of a grand bargain that Obama never intended to keep.
It’s up to Sarah to walk through the door.