In 1973, in the alternate timeline where an elderly Biff Tannen traveled from 2015 to 1955 to make his younger self rich with a sports almanac, she was part of the Hill Valley Civic Committee, which became a secret committee to protest BiffCo.
That year, she published an article which claimed Red the Bum murdered George McFly, and Biff was angry that his wedding to Lorraine Baines McFly was published inside the paper rather than on the front. Mrs. Blumberg told him that the paper was owned by The Washington Post. It had been sold to keep BiffCo from owning it, as Biff did not have enough money to buy them. However, Biff used the sports almanac to win bets on sporting events and purchased The Washington Post, renaming it The Biffington Post. He subsequently fired Mrs. Blumberg from the Hill Valley Telegraph, which he now owned.
In 1981, she was still a member of the Hill Valley Civic Committee, but the group was on the group of disbanding as Terry was murdered that year, and Dave McFly was forced out of town. However, things seemed to make a turnaround when Emmett Brown revealed that he was the silent benefactor and told them that he had been working on a time machine.