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Lohan Out of Rehab, Early

Lindsay Lohan is once again a free woman.

She was released Tuesday night from court-ordered rehab after serving less than a third of the time she was supposed to -- 23 days of her 90 day sentence.

Celebrity website says the bill for Lohan's stay in the UCLA Neuropsychiatric Hospital came to a cool $130,400 -- and it's not covered by her insurance.

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TMZ says Lohan was allowed to leave by judge Marsha Revel after doctors told Revel that Lohan doesn't have the kind of problems a lot of people think she does and didn't need 90 days in the rehab center.

Earlier, TMZ said a dependence on the prescription drug Adderall, which TMZ called "the result of a medical misdiagnosis," may have been behind the behavior by Lohan that led to the conclusion she was an addict.

TMZ said doctors at the UCLA rehab facility "believe Lindsay was misdiagnosed with Attention Deficit Hyperactivity Disorder, and then prescribed Adderall to treat the phantom affliction.

"Dr. Joe Haraszti, a prominent L.A. addiction specialist, tells TMZ people who take Adderall when they don't need it can experience similar effects as people who use cocaine or methamphetamine."

Last week, Us Weekly's Dina Sansing told CBS News, "One of the most shocking things is they're saying she's not experiencing any withdrawal symptoms, that she's not addicted to anything."

Lohan's estranged father, Michael Lohan, says he's happy she may have kicked one of her habits, but thinks she still needs long term treatment, reports CBS News Correspondent Ben Tracy.

"It's his understanding," Michael Lohan's lawyer, CBS News legal analyst Lisa Bloom says, "that Lindsay has gotten off the prescription drugs. That was his No. 1 concern, so he's OK with her being released."

Lohan also walked away from her 90-day jail sentence after just 2 weeks, Tracy points out. Yet experts caution against a quick fix, since the actress is the mess after being arrested for drunk driving and cocaine possession.

Dr. David Sack, CEO of Promises Treatment Centers, told CBS News, "What's important in drug and alcohol treatment isn't necessarily how long they stay in treatment, in a residential setting, but that they continue their treatment with a full commitment after they leave."

Being tabloid fodder is likely to pay off for Lohan, Tracy observes. She's said to have been offered $1 million to talk about her troubled past.

But is Hollywood ready to bank on her future?

"Right now," says Sansing, "big studios aren't ready to accept her back. They're not gonna be giving her big roles. For her to really come back onto the Hollywood scene, she's gonna have to start with small steps."

Those steps, says Tracy, are likely to begin with some outpatient rehab care, and she still faces 12 months of court-ordered random drug testing.

Lohan has at least one movie in the works, Tracy adds, and her mother, Dina Lohan, says Lindsay plans to relocate from Los Angeles to New York.