Harry Potter and God

[Carol]

Carol earlier:
> First, Dumbledore didn't choose to die that night. He was going to die, regardless. What he chose was to go through with the plan and have Snape kill him even though he had the other options that I mentioned. And, yes, of course, that plan saved Draco's soul, but so would the other options. And, yes, of course, that plan cemented Snape's position, but he could have gone with the Death Eaters and gotten them and Draco out of Hogwarts even if, say, Amycus Carrow had killed Dumbledore. (Granted, of course, Dumbledore specifically did not want Fenrir Greyback to kill him and Snape's doing so prevented that. And, of course, there's the Unbreakable Vow, which you don't mention.  <snip>

Carol again:

Sorry--I'm tripping over the complexity of my own thoughts again. What I'm trying to account for is Dumbledore's desperation. Even though the plan to strip the Elder Wand of its power has failed, Dumbledore still pleads with Snape to kill him, disregarding all the other forms of death available to him. Obviously, "Severus, please!" means "Severus, please kill me as you promised to do." But why is it still just as important as it was before Draco Disarmed Dumbledore?

On one level, of course, "Severus, please!" means exactly what Snape knows that it means: "Please kill me for the reasons we've agreed on and so that we can carry out our plan." But if that's all it means, why would Dumbledore be pleading, his soft voice more terrifying to Harry than anything else he has heard that night? The Elder Wand part of the plan has already failed, and Snape's action won't prevent Draco from becoming at least the temporary master of the wand.

Is DD afraid that if he dies in some other way than by Snape's hand, Snape won't become headmaster or won't be able to give his message to Harry? that seems unlikely given Snape's loyalty and ingenuity. Is it Snape's dying from the Unbreakable Vow if he doesn't get on with killing him that DD is worried about? I think that's part of it. He desperately needs Snape, perhaps more than Snape realizes. Obviously, the whole plan (as opposed to just the Elder Wand part) will fail if Snape dies, and Snape surely knows that.

But are the plan and the UV sufficient to account for Dumbledore's pleading tone, or could he also mean something that Snape doesn't understand, something related to the Elder Wand? 

If so, one possibility is the one I mentioned earlier, that the wand itself might choose the killer rather than the Disarmer of Dumbledore if that person isn't Snape, the man he requested (or coerced or ordered) to kill him. Obviously, it didn't and wouldn't choose Snape because Snape is doing DD's bidding, not defeating him. The whole idea as I understand it was to end the wand's power, not to make Snape its master. 

But here's another thought. What if DD is afraid that if Snape dies from breaking the Unbreakable Vow, Draco will be without protection and Voldemort will kill him, becoming the master of the Elder Wand in the process.

That would explain his pleading with Snape to hurry up and kill him. But, of course, he also needs Snape alive for other reasons, and the plan will work best if he's Voldemort's right-hand man even if that means killing DD in front of Harry.

Carol, just wondering if there's more to Dumbledore's desperation than meets the eye