The "It said" wasn't part of what it said, it's what the person being interviewed said in order to introduce it. So the full piece was:
"Well Marianne, it's come to this time when we are really so old and our bodies are falling apart and I think I will follow you very soon. Know that I am so close behind you that if you stretch out your hand, I think you can reach mine. And you know that I've always loved you for your beauty and your wisdom, but I don't need to say anything more about that because you know all about that. But now, I just want to wish you a very good journey. Goodbye old friend. Endless love, see you down the road…"
The person who read it to Marianne was Jan Christian Mollestad and he went on to say:
When I read the lines "stretch out your hand," she stretched out her hand. Only two days later she lost consciousness and slipped into death. I wrote a letter back to Leonard saying in her final moments I hummed "A Bird on a Wire" because that was the song she felt closest to. And then I kissed her on the head and left the room, and said "so long, Marianne."
More details here:
http://www.cbc.ca/radio/asithappens/as-it-happens-wednesday-edition-1.3705984/so-long-marianne-leonard-cohen-s-final-letter-to-his-muse-1.3705989