Megan Marshack, an aide to Nelson Rockefeller who was with the former New York governor and vice president when he died under circumstances that spurred intense speculation, has died in California at age 70. Marshack died on Oct. 2 of liver and kidney failure, according to a self-penned obituary posted by a funeral home in Sacramento, California. Her brother said she died at a live-in medical facility in Sacramento. Marshack, who had a long and varied career in journalism, suddenly gained national attention after the four-time Republican governor collapsed and died of a heart attack on the night of Jan....