G'day mrobson.You're not getting too much response on this!
I seem to remember an Aussie singer, some years back, singing a song about the Tail-Gunner's Wife ... not quite the one you are after. I reckon that a "rear gunner in a Lancaster in spring of '44" might be just about the only one to survive ... earlier in the war they reckoned the average flying life of a tail gunner was something less than the length of a single mission!
(That comes from an autobiography of a tail-gunner (in Hudsons?) ... called They Hosed Them Out!
Regards,
Bob Bolton