at the beginning, and for the first two verses, she's picking the notes 
D5 , D5 , C#5 , C#5 , B5 , B5 , A5
you can also play the chords D, D, Bm , D for the verses.

then for the ohhhhs, she's playing a G chord.

then the chord progression for the chorus is 
B5 , G5 , D5 , A5
B5 , G5 , D5 , A5
B5 , B5 , G5 , D5
G5 , A5

then for the bridge the chords are 
G5 , G5 , D5 , A5 ,  G5 , G5 , A5 , A5


This is my first tab.  I couldn't find the chords to this song, so I decided to 
try and figure them out.  They may not be exactly right.