The talented director jokingly referenced a threesome, suggesting the gold statue would be joining the high-profile couple in bed that night.
She made international headlines with the joke and the notoriously private couple have been thrust into the limelight since Dearbhla's big win.
She beat stiff competition at the 61st annual Emmy awards and scooped the garner for her direction of the BBC adaptation of Charles Dickens Little Dorrit.
After winning the award, Dearbhla joked to her TV presenter partner Anna Nolan, "Looks like there will be three of us in bed tonight."
Dearbhla has previously directed TG4's Ros na Run and Channel 4's Shameless.
The Sligo native took Hollywood by storm at Sunday night's ceremony looking every inch the glamour goddess in a striking red halter dress by Dun Laoghaire-based designer Rachel Mackay.
Broadcaster and columnist Anna opted for a sheer black dress with rose bud details on the neckline by the same designer. When she learned of her nomination, Dearbhla said she insisted on wearing an Irish designer to the prestigious ceremony.
Anna may be best known for coming second in the first series of Big Brother in 2000, but she was on hand to support her girlfriend of several years.
Dearbhla's remarkable win has prompted a sense of pride in the Irish gay community and the blogs have been buzzing since she took the statue home.
The talented director said it was so shocking she didn't believe it when they called her name. "Suddenly they called my name and there was a stammer and it was like that mortifying moment, 'Oh my God, they've got it wrong,' and then the camera panned and everyone looked and it was 'Oh my God, it was me','' she said.
The couple live together in Dublin and have been 'under the radar' as a couple for the last few years.
Dearbhla has been working in television for 21 years since finishing her degree in DCU, when she began working with short arts pieces then branched out to children's programming.