Borned on September 21, 1983, in Worthington, Ohio, the second of three children of Valinn and Rick Denig, who ran a family jewelry business. The family lived in a 200-year-old house, the first saltbox house in central Ohio which is their ancestral house. She attended Worthington Christian Schools from kindergarten through ninth grade and briefly attended Thomas Worthington High School, where she grew up and began acting in school plays and community theater,including a Jewish Community Center's Gallery Players' 2000 production of The Crucible.

Grace lived in Honolulu, Hawaii while working on Lost, saying "I love it here, but it's not a place you can really pursue acting". She got started her career in films "Murder in Greenwich" (2002) (TV),and "Shop Club" (2002). She have met stars that once idolized and seen before that inspired her more. When 2003 comes, in the age of 20, she played a creepy, Goth-influenced estranged daughter of Wendy Crewson and Tom Selleck in the drama "Twelve Mile Road" (2003) on the television too, but her big break didn't come until one year later, playing the beautiful Shannon Rutherford on the hit ABC island-survival drama "Lost" (2004). She also stars with "Smallville" (2001) cover boy Tom Welling in the horror film "The Fog" (2005).

Eventhough fame is with her, Maggie has weakness in bigger man because she wants bigger man because maggie wants a man who can carry her in all four sides of the room when they are having a sex. She also wants tying her into the headboard of the bed and licking her pussy and other parts of her body before having a sex. After sex maggie wants to kiss her man while she was sitting on her big man's ass, because she wants to see the big sexy back of her man while giving her best massage, maggie wants to give a massage to her man after having sex, because she wants to pay back the satisfaction she get to her man.