Katie Couric can’t believe she’s “old enough” to be a grandmother. The 67-year-old journalist – who has Ellie, 32, and 28-year-old Caroline with her late husband Jay Monahan – is mostly thrilled that her eldest is expecting her first baby but admitted that the milestone served as a reminder of how quickly life goes by. She told Us Weekly: “I think 99 percent was, ‘I’m so excited.’ And one percent was, ‘Holy s***’, I’m old enough to be a grandmother. It’s sort of almost like your life flashes before your eyes.” The former talk show host – who lost her husband Jay when he died of colon cancer ag…
