8Renovator of LivesSitting at her desk, Betty Hines ripped open a letter marked personal and started to read. You may not remember me. I graduated in 1985, it began. Hines glanced at the signature, and her mind filled with memories of Mendez and her first days at a Detroit high school. She had battled with Mendez almost from the beginning, dogging the truant junior to shape up. It was the same challenge she had faced with so many students.In 1984 Hines came to Southwestern High School