"But it was you made me your man... machine."
It would make sense if this was a reference to the Kradftwork album, especially when you consider the lyrics to it's opening song "The Robot"
"We are programmed just to do, Anything you want us to" fits very well with the concept of a mother raising her son, who now realises as an adult that she was in charge even when he thought he was the one leading her.
And perhaps the line "We're functioning automatic, And we are dancing mechanic" would also resonate with the way Bono felt after her death?
"Don't fear the world it isn't there"
Is this only pertaining to Bono's nightmares as a child or something much deeper?
The end of the song is Bono directly relating memories of his mother, so I think that will be something she said once while calming him down after a nigthmare.