G: 300003
F#: 200000
Em: 020000
C: X3201X

She runs G -> F# -> Em like this:
[Chords]
300003 pluck 1st and 6th simultaneously
000000 pluck 4 only
200000 pluck 1st and 6th simultaneously
000000 pluck 4 only
020000 pluck 2nd and 5th simultaneously
000000 pluck 4 only

For the C part: hammer on 3rd string on the C chord -> pluck 4th -> pluck 5th -> pluck 4th -> pluck 3rd

For ending G part for 1st and 2nd lines of each verse: pluck 1st then 4th twice

In the third line for each verse, play the Em part just like you play the ending G part
[Verse 1]
G   F#       Em     C                 G
Something's wrong that my heart can't fix
G F#   Em   C               G
I got stuck in this big old ditch
C               Em  C        Em
Try to climb my way out this hole


[Chorus]
        G   F#      Em    C            G
Singing something's wrong I just can't control

G  F#       Em    C             G

[Verse 2]
G  F# Em     C         G
Forty nights and forty days
G    F# Em   C                G
Some survive some just washed away
C             Em C                  Em
And we listen to those church bells toll


[Chorus]
        G  F#       Em    C             G
Singing something's wrong we just can't control


*************************
[Bridge]
300003 pluck 1st and 6th simultaneously
000000 pluck 4 only
500005 pluck 1st and 6th simultaneously
000000 pluck 4 only
700007 pluck 1st and 6th simultaneously
000000 pluck 4 only
500005 pluck 1st and 6th simultaneously
000000 pluck 4 only
300003 pluck 1st and 6th simultaneously
000000 pluck 4 only
000000 pluck 1st and 6th simultaneously
300003 pluck 1st and 6th simultaneously

G  F#       Em    C             G
*************************

[Verse 3]
    G     F# Em       C         G
But cheer up brother, don't you cry
G     F#    Em      C                 G
We'll understand it all in the by and by
C             Em C                        Em
Hear those shots ring out and it hurts my soul


[Chorus]
        G   F#      Em    C             G
Singing something's wrong we just can't control

G  F#       Em    C             G

[Verse 4]
     G   F#      Em     C              G
Well something's wrong and I'm feeling strange
G  F#   Em    C         G
Nothing seems to be the same
C         Em   C           Em
Hear that wide muddy river flow


[Chorus]
        G   F#      Em    C             G
Singing something's wrong we just can't control

*************************
[End run - play twice]
300003 pluck 1st and 6th simultaneously
000000 pluck 4 only
500005 pluck 1st and 6th simultaneously
000000 pluck 4 only
700007 pluck 1st and 6th simultaneously
000000 pluck 4 only
500005 pluck 1st and 6th simultaneously
000000 pluck 4 only
300003 pluck 1st and 6th simultaneously
000000 pluck 4 only
000000 pluck 1st and 6th simultaneously
300003 pluck 1st and 6th simultaneously
*************************