She has appeared in the television series, Charmed, Dante's Cove, The Bold and the Beautiful, Cold Case, Dollhouse, Spartacus: Blood and Sand, and Detroit 1-8-7.

[1] Her father was in the military, and Erin lived in South Korea, Nebraska, and various areas of Louisiana, later growing up in Huntsville, Texas.

After Kilgore, Cummings attended the University of North Texas, graduating with a degree in journalism.

[2][3] Cummings portrayed Erin Ward in Detroit 1-8-7,[4]: 255  Michelle in the television drama Dante's Cove.

[1] On September 9, 2016, shortly after marrying actor Tom Degnan, Cummings announced that she had been diagnosed with invasive ductal carcinoma—an aggressive form of breast cancer—and had begun treatment at UCLA.