Halliday, one of the first successful female entrepreneurs in Dallas, graduated from high school in Abilene, Kansas, in 1929. She got a $10-a-week job selling women's hats at The Jones Store in Kansas City. In less than a year, she was the top salesperson. In 1938, Ebby was asked to take over the millinery department at Dallas' W.A. Green Store. Soon she had her own Dallas boutique, Ebby’s Hats.
She married former FBI agent, Maurice Acers.[when?]