Sorry for the late response - I just got back from travelling to meet that side of the family. But unfortunately, I don't remember the lyrics. She introduced it a long time ago and she stopped being MC of Christmas a few years back. We didn't get to enjoy it this year.
I just made this up on the spot, but it was in this spirit
Oh God above, sweet lord of mine
How much you love your children.
Oh God above, sweet lord of mine
How much you love your children.
You sacrificed, your one true son
to save us earthbound sinners here...
--and so on --
Rejoice, repent! We praise your name...