One day in the summer of 2001, an old woman walked into to Chabad shul with two children: an eight-year-old boy and a six-year-old girl. She spoke resolutely—but with tear-filled eyes: “School starts in two weeks and I can’t possibly raise and educate my grandchildren. I leave them to you. I have faith in you!” We were shocked at this poor grandmother’s decision. But she told us that just last night, her daughter was...