Stepwilk
At 91 Maureen O'Hara is still around, living in Glengarriff, Co Cork.
The Irish Independent dated 19th May 2011 has a photo of her taken at Foynes Flying Boat Museum, with Lal Kirwan Dowley, the first ground hostess for the flying boat, museum director Margaret O'Shaughnessy and Carol Davenport, whose husband David was head of operations.
See here:
The screen siren and her dashing captain - National News - Independent.ie
Quite possibly the Foynes Flying Boat Museum will help you in your research for the elusive Flying Boat Stewardess(s)