Author Isabel Allende poses at her writing studio in Sausalito, Calif., on April 12, 2023, to promote her latest book "The Wind Knows My Name." (AP Photo/Eric Risberg) MIAMI – The separation of migrant families at the U.S.-Mexico border has always caused Isabel Allende pain: When she saw it during the Trump administration, her first impulse was to help reunify children and parents through her foundation. Then, the legendary Chilean author thought, she had to write a book. “The Wind Knows My Name,” which grapples with immigration, violence, solidarity, and love, is the latest novel by the award-winning writer who...