Catherine O’Hara didn’t just have notes for the writers of “Schitt’s Creek” — she would rewrite entire scenes “from top to tail,” according to Dan Levy . O’Hara died on Jan. 30 in her Los Angeles home after a brief illness. She was 71. On Monday’s episode of podcast “Conan O’Brien Needs a Friend,” Levy recalled working with his friend and co-star on the award-winning sitcom O’Brien told Levy, “I remembered thinking it was such a nice thing for Catherine to have that role during that last decade