Australian song - Kate Kelly's Request, a plea from Kate Kelly to her brother Ned to think of her while he is away.

Does anyone have the lyrics for this song, or know who wrote it and who has recorded it?
I heard it sung at The Shack in Sydney, by Kate Henshaw with Pete Doherty (Lyrebird). I don't think Kate or Pete wrote it, however, and they don't have it recorded.
Thanks,
AnneMC