She said: “It’s incredible. I’m in a state of shock.”
Marie, from Maginn Avenue, missed the drawing of her ticket last Saturday night – because she was watching the X Factor on TV3!
Husband Sean and family members were in the audience for the show which was being watched back home at the North West Golf Club in Lisfannon where Marie plays.
The 16-handicapper is planning to take sons Cahir, 26, and Ruairi, 24, to play the Augusta National Course in the States.
As well as Sean and the boys, her sisters along with many friends and extended family travelled to Dublin with her for the big night, while her proud mum watched at home with her aunts.