U.S. District Judge Virginia M. Kendall’s mother doesn’t usually go to work with her daughter.But 86-year-old Marie Cowhey couldn’t pass up a chance to accompany Kendall on her latest business trip.This week, the mother and daughter traveled to Vatican City, where Kendall is speaking at a conference on human trafficking, and Cowhey hopes to get a rosary blessed by Pope Francis.The Judges’ Summit on Human Trafficking and Organized Crime was called by the Pontifical Academy of Social Sciences to learn …