Naturally, she isn't going to say 'yes' until after her Senate race. She needs that Senate seat as a platform; otherwise, she only has 1 Senate term of experience.
AFTER she wins reelection (probably a certainty), she will start spending as much time in the Senate as Kerry did and spend more time locking down the nomination.
As much cover as MSM gave Kerry, Hillary would expect the same and more. Ironically, Hillary actually has accomplished more in her 1 Senate term (so far) than Kerry did in 20 years in the Senate.
I think the rules would be different for Shrillary. Kerry was an unknown outside of MA, so the old media basically didn't have to do anything....but they did. They fawned all over him and gave him the most gushing, praising press of any Presidential candidate in US history. But the thing is, they we're called on this to the extent that has also never been seen in history by the new media.
With Shrillary, everything is changed. She's not an unknown, so any attempt by the old media to try to pull a Jean Francois Kerry, will be met by an extremely hostile and ticked off new media and they know it. They've also seen just how much credibility and relevancy they've lost. If they try to treat her the same as Jacque Kerry, they will lose more than they already have.