How To Use Ruefulness In A Sentence

I told her about my coffee date with my neighbour last week, and we analysed with our usual ruefulness the mixture of mellowness and awkwardness that arose.
Folk and country, romance and ruefulness, innocence and experience are all conjoined in their bewitching vocal harmonies.
Today, as she tends her garden in a retirement community, Brevard considers her glamorous past with a mix of ruefulness and pride.
Cuomo's voice, too, has changed over the years, losing some of its hangdog kickability and gaining faint echoes of Roy Orbison's ruefulness, as ‘The Other Way’ hints.
But the more I thought about the matter, the more my feelings turned to ruefulness.

There is a quality of self-directed ruefulness or self-causation.
While he was a strong proponent of anti-inflationary policies, he looked back on these years with a certain ruefulness. Times, Sunday Times