It all depends on what her intentions are. If she has no intention of running for president, then she very well might be doing what she believes to be in the best interest of her state. If she does intend to run for president and this is somehow part of the plan, then she’s just cuckoo. Time will tell.
Respectfully, that is a load of crap. Bob Dole resigned from the Senate in order to focus on running for President and I don't recall people saying he was crazy. In fact, I seem to recall people praising him for not trying to hold on to a job that he couldn't possibly devote adequate time to if he was off running for President. Why the double-standard now?
And if she plans to run and wins, does that make you cuckoo instead?
Obama did not even, really, serve as a US Senator, as he was campaigning for President every single day he served as Senator.
Palin served as Governor for more days that Obama served as a US Senator.
Quit drinking the liberal koolaide.
[If she does intend to run for president and this is somehow part of the plan, then she’s just cuckoo.]
Or perhaps you are cuckoo. There is that possibility, which seems just as likely as your scenario.