Claire Mercuri says that the daughter of Joel and supermodel Christie Brinkley is with her family and looking forward to getting back on track.
She says the 23-year-old singer-songwriter thanks "everyone for their outpouring of love and support."
Mercuri didn't say where Joel was staying since her release from a Manhattan hospital. Her parents have separate homes in New York City and on Long Island.
Police received a 911 call Saturday saying Joel had taken several pills. Officials didn't know whether she had accidentally overdosed or attempted suicide.