Hallelujah?

Last night I was pointed to a video on Facebook of an 8 year old girl, Rhema Marvanne, with a great voice singing "Hallelujah" (the version you can hear in one of the Shrek movies).  It  sounds like she's singing for the Lord, but the lyrics of that song begin with King David's "secret chord, which pleased the Lord" then says "but you don't really care for music, do ya." Next it goes into King David's great sin. Then she sings, "I know that there's a God above..." but the written lyrics in the video say "Well maybe there's a god above..." and goes on to say "the only thing I learned from love was how to shoot somebody who'd out drew ya..." The final verse I have mixed feelings... is it a loss of faith in the "cold and broken hallelujah," or is it someone who has found faith in their darkest hour? In short, the song throws mixed signals... but it's an 8 year old with a wonderful voice singing something from Shrek, maybe that's all one should take from it?
Here's Rhema's video:

The original scene from Shrek (not great video quality, but the sound is ok).  In the movie it depicts Shrek's darkest hour - when he's giving up on Fiona.  Ok, it's Disney, so it all works out, but the underlying message behind this song still bugs me.  Here's that video:

Here's another from Rhema which is, IMHO, a bit more appropriate: