Marina is the only child of Frank Cooper and Eleni Andros. After Eleni's affair was discovered, these two divorced; it was an event that Marina didn't forgive her mother easily for. Though she moved away and lived with Eleni in Los Angeles after her parents' break-up, she returned in December 2001 after running away from California.

Though her parents considered re-uniting for Marina's sake, Eleni eventually left Springfield once more giving in to Marina's desire to live with her family.