Chuck & Loecat: don't do much Internet
(only have an iPhone) but after some searching I found that Chuck Is right and David and Eileen did settle in Canada
near Lake Ontario
Then they sold Little Gidding.
...from a cruiser's blog:
"...e what was up. We had a very pleasant conversation with Rene - the new owner - and confirmed that Eileen and David are entertaining lucky passengers on cruises on Lake Killarney this summer."
Since they have chosen to live a life with no public exposure, I will honor their choice and not add any more information that goes beyond my original question: Where is Eileen Quinn now?
Continue to enjoy Eileen's músic as I and all those who lived that magical experience shall.