The former The O.C. star was allegedly placed under involuntary psychiatric hold at the Cedars-Sinai Medical Center in Los Angeles earlier this month (Jul09) after reportedly suffering a meltdown and calling cops to her Hollywood home.
Barton was released over the weekend (25-26Jul09) after a week of treatment, and her representative insisted the actress was eager to get back to work on Ashton Kutcher's new drama series in New York.
The star's close circle of friends have voiced fears that she needs more "aggressive" therapy to get back to her best before returning to work, according to the New York Daily News.
But her co-stars Sara Paxton and Ben Hollingsworth insist Barton will wow audiences with her triumphant return to TV.
Paxton tells People.com, "We had our first read-through (29Jul09) and we're all so very excited to have her back. She's such a great girl. We really didn't talk about everything that's been going on. It was really all work.
Hollingsworth adds, "We were all worried about her. We didn't really know what was going on, but she's looking great. She's feeling great and it's just good to have her back. We start shooting again on Friday (31Jul09) and she's ready to work. We're all ready to jump into it and are very excited - even Mischa.".
Barton, 23, is set to play Sonja Stone, a catwalk beauty addicted to pills, on the new show, which is scheduled to debut in September (09).