Carpenter had been in serious condition throughout the weekend. The family has remained by her side and has requested privacy as she recovers.
Carpenter was injured during the second inning of Friday's game when Oakland third baseman Brett Lawrie's shattered bat went flying into the seats behind the A's on-deck circle. She was admitted to Beth Israel Deaconess Medical Center with life-threatening injuries after receiving first aid at Fenway.
The Red Sox issued the following statement on Saturday: "A woman was injured by a broken bat that flew into the stands in the top of the second inning of last night's game.