She graduated from Elmhurst High School in 1947, and from 1942 to 1947 played for a championship team sponsored by Harold Greiner, owner of the Bob-Inn Restaurant in Fort Wayne.

She had a mother who had a bad cold all the time and had to use the money she earned to take care of her and a young brother George Demetrious Peppas Jr.

In her rookie season, Peppas posted a 4–12 record with 39 strikeouts and 91 walks in 113 innings for the Daisies, including a 4.62 ERA which ranked her near last place between the league pitchers.

When Kalamazoo had to face the Fort Wayne Daisies for the AAGPBL Championship Title, Peppas came through with a stellar performance.

In Game 1 of the AAGPBL Series, the Lassies defeated the Daisies 17–9 behind a four-hit, seven strong innings from Peppas, who also helped herself by hitting 2-for-4, including one home run.

Her teammates Carol Habben, Fern Shollenberger and Chris Ballingall, who hit a grand slam, also slugged one each.

Katie Horstman connected on two home runs for the Daisies in a lost cause, and her teammate Joanne Weaver slugged one.

Maxine Kline, who had posted an 18–7 record with 3.23 ERA during the regular season, gave up 11 runs in six innings and was credited with the loss.

Following her AAGPBL career, Peppas earned bachelor's and master's degrees in arts from the Western Michigan University during the late 1960s.