[2] She later earned a Master of Fine Arts degree from the Yale School of Drama.
[3][2] On television, Gibney portrayed Maggie Harris on Happy Family,[4]: 431 Janis Archer on Diagnosis: Murder,[4]: 257 and Rene Walcott on Crossing Jordan.
[4] She appeared twice on Star Trek: The Next Generation as Dr. Leah Brahms, once in the episode "Booby Trap" and later in "Galaxy's Child".
She also appeared on Star Trek: Deep Space Nine, in the episodes "Homefront" and "Paradise Lost", as Commander (later Captain) Erika Benteen.
[5] Post Star Trek, Gibney has appeared in a number of movies, the most critically acclaimed one being We Are Still Here,[8] a 2015 American horror film written and directed by Ted Geoghegan.