Cindi Berger, Carey's spokeswoman, told the Daily Newson Wednesday that the singer was feeling much better and was staying at an undisclosed location with her mother.
Carey, 31, is still under a doctor's care.
After her breakdown, Carey canceled all public appearances, including the MTV 20th Anniversary bash on Aug. 1.
She also reportedly broke up with her boyfriend, Latin singer Luis Miguel, before she was hospitalized.
The premiere of Glitter has also been delayed one month to Sept. 21. The album of the same title will be available on August 21.
Before her breakdown, the singer left several ominous messages on her Web site complaining of being overworked and not receiving enough attention from her record label.