Lindsay Lohan: Behind the Rehab

Reportedly, Wonderland Center addiction-treatment facility is doing wonders for Lindsay Lohan.

"She's been sending text messages from rehab saying she's the happiest she has ever been," a pal tells People magazine in its new issue. "She seems under control right now."

Which is unusual for Lindsay. Normally, she's under some random dude.

Lohan, who had planned to attend the Sundance film festival, has instead been taking hikes on the center's lush three acres and attending treatment meetings. We assume she's been talking to her crazy mom, Dina Lohan, as well.

Says Dr. Howard C. Samuels, the center's executive director: "We treat the individual's emotional, spiritual and physical ailments."

No word on whether or not they can do anything about Lindsay's firecrotch.

Of course, if Lohan does wish to step out, the facility allows patients to attend professional and social engagements, typically with a "sober companion." Guess that rules out Britney Spears.

So, what was the final straw in Lohan's alcoholic drink? The actress hit Hollywood's Les Deux on Jan. 5, less than 24 hours after having her appendix removed.

"That's when (those in her inner circle) said, 'We can't make excuses for this,' " says a source. "She was like, 'You're right. So let's do something about that.' "

Sounds surprisingly mature. Perhaps Anna Nicole Smith could learn a lesson or two from this alcoholic.