The Obamas were supposed to meet with director Rob Reiner and his wife, Michele, the night they were allegedly killed by their son, Nick Reiner, in their home in Los Angeles. “We were supposed to be seeing them that night — last night — and we got the news,” Michelle Obama said on “Jimmy Kimmel Live!” Monday night, when host Jimmy Kimmel asked how she was coping with the news of her friends’ murders. The former first lady said she and her husband were devastated when they learned that the legendary filmmaker and his wife, with whom they had been...