In 2018, she traveled to Portland, Ore., for a gathering of Moms Demand volunteers, and when she walked into the meeting room in her red T-shirt, a woman at the front asked her to sign in, so she did.

“Could you help us set up chairs?” the woman asked next.

“Sure,” Watts replied, and she did that, too.

The interaction, she said, was thrilling.

“She had no idea who I was,” Watts recalled. “And I thought, ‘This is what a healthy organization looks like.’ It isn’t about me. It is about them.”