LAHORE, Pakistan — Two Christian sisters whose supervisors tried to pressure them to convert to Islam and marry them were found slain Jan. 4. Sajida Mushtaq, 28-year-old wife and mother of four, and her sister, Abida Qaiser, also a mother, disappeared Nov. 26, 2020. Their decomposed bodies were found in sacks in a drainage ditch. Muhammad Mumtaz and Naeem Butt,…