" Lena Ella Haloway Tiddle." I pronounce her full name, very slowly, partly because I need to reassure myself of her existence—Lena, my friend, the worried one, the one who always pleaded for safety first, who now makes secret appointments to meet with boys. " You have some explaining to do." " Hana, you remember Alex," Lena says weakly, as though that—the fact of my remembering him—explains any "