When the planes struck the World Trade Center on Sept. 11, 2001, Jessica Ellerbe was a seventh grader sitting inside the chapel at Long Island Lutheran Middle School in Brookville. She remembers the sudden seriousness that swept through the school. Students whose parents worked in the towers were taken from the chapel. Classes ended early, buses arrived and Ellerbe was left wondering why her father wasn’t home. At the time, her father Leonard El…