Tony DiMaio/Shooting Star
08/06/2007 at 08:00 PM EDT
Laying low following her July 24 arrest for DUI, driving with a suspended license and cocaine possession, Lindsay Lohan
, 21, quietly made her way to mom Dina's house in Long Island, N.Y., on Friday.
She flew first class to Kennedy airport to end up in the arms of her mother, grandmother and younger siblings, the New York Post
"She's doing well," Dina told the paper.
On Sunday, the Web site
for TV's Entertainment Tonight
reported that the actress had entered a rehab facility in Sundance, Utah.
Lohan – who completed a 46-day stint at Malibu treatment facility Promises on July 13
– had remained out of sight after being released on $25,000 bond in Santa Monica, Calif. That arrest came after the mother of her former assistant, Tarin Graham, called police saying she was being chased
on the road; Lohan was found behind the wheel of the SUV suspected in the chase, and failed a field sobriety test.
Still, Lohan has insisted that she is "innocent"
and "did not do drugs."
The actress is due in a Santa Monica court Aug. 24, the same date she was to head to court for DUI charges stemming from her first arrest in Beverly Hills in May. At that time she was booked after crashing her Mercedes, and was found to have cocaine and twice the legal limit of alcohol in her system, according to a source close to the investigation.
Although Lohan's future remains unclear, it may be a positive step that she's out of L.A., even for a short time.
"If you want sobriety, you have to change everything," Beverly Hills addiction specialist Marty Brenner told PEOPLE. "You have to change your friends, your crowd, your lifestyle."