Immediately following college graduation, Cash worked in retail advertising at Joske's of Texas, eventually becoming the department store chain's director of electronic advertising at the company's headquarters in San Antonio. Cash is a former president of the Texas Associated Press Managing Editors. During her tenure, she chaired a Texas APME study of the University of Texas Journalism Department's news-public affairs sequence. The study yielded a report with recommendations on how the program should evolve to meet the changing needs of the newspaper industry. The study also helped launch CapLink, UT's innovative student news service.
Cash is a frequent speaker at industry meetings and in high school and college journalism classes.
She is a board member of the Freedom of Information Foundation of Texas, member of the American Society of Newspaper Editors, chairman of the Texas APME journalism education committee and a member of the national APME journalism studies committee. Cash is married to Richard M. Cash, who received a Bachelor of Architecture at UT Austin, 1971.