Credit: Fame Pictures

On Wednesday, Lindsay Lohan's mother Dina and sister Ali popped by the Century Regional Detention Facility in Lynwood, Calif., where the actress, 24, is confined for at least the next two weeks for violating probation from her DUI case.

It is unknown if they actually saw her -- typically, visiting hours at the facility are on weekends for friends and family -- but Dina flashed a thumbs up to photographers as she left. She didn't talk to the pack of reporters.

Lindsay's incarceration has been particularly tough on 16-year-old Ali, dad Michael Lohan told Larry King Tuesday night. When Lindsay was handcuffed in court Tuesday, "Ali was a mess," he said.

Michael, who spent two-and-a-half years in the slammer after being charged with simple assault in 2005 and driving under the influence of alcohol, said he will visit Lindsay this weekend.

He said he is proud of his daughter for remaining so "strong" through it all.