On Friday 6 October, my 27-year-old daughter, Tamar, for ever my little girl, was so excited. After a long period of illness, she was finally going out to enjoy herself at an all-night music festival, something she had not done in years. She was so looking forward to a night of music and carefree dancing. On that night, the Jewish holiday of Simchat Torah, she ate dinner with my husband, Dudi, who was home alone because I was abroad, as were two of my other daughters. Tamar then brought dinner over to her older sister, Adva, a mother of two...