I didn't know that, and good for her. But I would imagine that there is still a plane at the Governor's disposal, of some type. Given the distances and accessibility of portions of Alaska it only makes sense. Much more so than most other states.
Washington several years ago upgraded the longstanding King-Air turboprop for a jet (frankly I don't recall whether it was a Beach or a Citation or a Lear, but I think it was a BeechJet).
I have mixed feelings on this. I don't begrudge a governor an airplane. It usually makes sense on most levels. But there's a lot of range of cost for the various choices. The biggest variable ought to be the physical size of the state.
There is no need to own a jet when leasing and fractional ownership is an option. In any case, a jet is not the best choice for Alaska, where many of the places the Governor would need to go are not equipped with the kinds of runways a jet would require.
Now, if she wanted to spring for a DeHaviland DHC-2, I think we would all understand.