12/13/2009 AT 04:30 PM EST
returned to the U.S. on Saturday, following a weeklong visit to some of India's most impoverished areas, where she filmed a documentary about the trafficking of women and children.
"Lindsay is home from India now. I am so proud of her for going," Dina Lohan told PEOPLE Sunday of her daughter, who arrived at Los Angeles International Airport on Saturday.
While in India, Lohan visited the Sanlaap women's and children's shelter outside Calcutta, which houses young women and girls who were victims of trafficking and other forms of exploitation. Lohan spent about three hours with residents and watched dance performances by the children. At one point, she donned a bindi – a forehead decoration common in India – after bonding with some of the girls, who wore bindis themselves.
Lohan also visited hospitals, where she distributed gifts to sick children.
The actress traveled around India with a four-person camera crew from the BBC and her friend, stylist Patrick Aufdenkamp, who zztweeted earlier this week, "Can't wait for everyone to see the documentary of [Lindsay] with the incredibly brave children we met on our journey."
And Lohan herself took to Twitter to espouse the virtues of helping those less fortunate. Visiting India was "the most amazing time of my life," she wrote. "Focusing on celebrities and lies is so disconcerting, when we can be changing the world one child at a time.... hope everyone can see that."