Here’s how the singer Jewel and the Kroger supermarket giant got entangled in a legal battle over a wellness festival gone wrong

In the fall of 2018, the singer Jewel stood on a Cincinnati stage in an autumnal floral dress, acoustic guitar in hand, and explained why she was “doubling down on wellness.” 

If you look at the common denominator of the things that have become “pain points” for the country, she said, “it's lacking empathy, it's lacking emotional fitness.” 

Jewel, who first rose to fame as an indie folk star in the 1990s, has headlined major events and performed at the Grammys. But this was a decidedly less glamorous venue...