I'm not quite sure if all of this will make sense... so please correct me if I'm wrong. 
have to admit to being an extremely visual person and absolute crap at playing by ear. 
she plays this riff for most of the song:

|E----------------0--2------|
|B-1------------------3--1-1|
|G---0---0----/7---------2-2|
|D-----2-----------------2-2|
|A-3------------------------|
|E--------------------------|

There's plenty of all those awesome background instruments, so again, this probably 
exactly what's played. Especially the end part; she does something else, I think.
Also, that one verse, "When I lay me down.." she uses a different riff for the last 
lines. I think it's something like this, but please correct me.

|E-------------0----------------|
|B-1-------------1-------1--1---|
|G---0---0---------0-----2--2---|
|D-----2-------2---------2--2---|
|A-3----------------------------|
|E------------------------------|


And yeah. End with whatever you see fit. I think it fades out on the first riff, but whatever.