My theory: What happens to Nessarose, really?

Now, we all know how it goes, don't we? Nessarose gets hit by Dorothy's house and promptly cacks it on the spot, correct?
Not in my opinion.

In The Land of Oz, L. Frank Baum writes "...Since Oz became a fairyland, no man, woman or child ever dies in that land..." - and, as Nessarose is a native Ozian, the 'fairyland' protection extends to her too.

Now, that house. It would've severely injured Nessa, enough to knock her into a coma or, at very least, into unconsciousness. That's why it's so easy for the shoes to be taken, why she makes no attempt to free herself, and so on.

We must remember that not every Munchkin seemed to despise her rule. Therefore, we can assume that a group of sympathetic Munchkins rescued their once-proud and once-again-crippled ex-leader from underneath the house, and took her away to recover, hiding her from the vigilant anti-Witch patrols and, especially, the Gale Force.

After a long time, she regains conciousness. Her first thought is for Boq, and her heart aches - she knows that she did him wrong, she'd tear her own heart out just to make him love her in return and stay with her, faithfully.
She attempts to stand, and fails - no shoes, no ability to walk. She resumes her wheelchair, rescued by the Munchkins and stripped down to be less conspicuous, and... she waits, and hopes, and prays that her sister will find her, or that any of her other 'friends' will.

...And that's as far as my theory tends to go.

For the record: in our cut-down Wicked, Glinda resurrects Nessa at the end, and returns Boq and Fiyero back to their normal selves. It was the easiest way of ending the thing, really.