"We are the seasoned married couple in the room. Now we are the ones that people ask advice from," Martin-Green tells PEOPLE about her nearly 15-year marriage

Sonequa Martin-Green does memorable work as Merit, who avoids dealing with the past by imagining her BFF is still present.

This image released by Briarcliff Entertainment shows Natalie Morales, left, and Sonequa Martin-Green in a scene from "My Dead Friend Zoe." (Briarcliff Entertainment via AP)

My Dead Friend Zoe,” starring Natalie Morales and Sonequa Martin-Green, confronts a dark reality of post-combat struggle with as much humor and playfulness as it does trauma and sorrow. Director