The New York Times obit has a little background on her and Bob Flick:

"In 2008, Ms. Anderson married the musician Bob Flick, her fourth husband, who was a founding member of the 1960s folk group the Brothers Four.

The two had met more than four decades before, on May 17, 1963, as part of a fan photo opportunity for Mr. Flick’s band. Exactly 45 years later, they cut into a wedding cake decorated with that first photo of them."