I have an answer. Murkowski must have been promised a better parking space, an office with her own thermostat, and some new furniture.
Perhaps a relative's child needed to get into a private school or university, but did not have the good grades or scores, or someone has something that she does not want released to the press.
It could be anything that she wanted, which made her turn on her own State.
I was wondering, where she has homes: DC, Connecticut, CA. FL, HA?