In Barbara Kingsolver's "Unsheltered," the character Willa holds a strong belief that worry serves a protective function in her relationships. She perceives worry as a mechanism that helps maintain the stability of those she cares about, ensuring they don't lose their way or fall out of emotional balance. This reflects her commitment to the well-being of others and the bond they share.

Willa's view on worry highlights the complex nature of human connections. It suggests that while worry can often be seen as a negative emotion, in her case, it is intertwined with love and concern. This belief showcases the struggles individuals face in navigating their own emotions, and the lengths one goes to protect loved ones from life's uncertainties.