Will Hillary give it up?

As Jim Geraghty points out, not likely:

If Hillary quits now, then four years from now she will be either trying to get the nomination again to take on an incumbent McCain or McCain's vice president, or challenging an incumbent President Obama. That task would be at least as difficult as the obstacles Ted Kennedy had against Jimmy Carter in 1980. And it would be much tougher and uglier task than she faces now in dealing with superdelegates or Michigan and Florida.

There is no long-term game. Either she's the party's nominee this year, or she won't ever be.