Singer Chynna Phillips has entered a rehab facility, where she is receiving treatment for anxiety, a rep for the star said on Monday.

The daughter of Mamas & Papas founders John and Michelle Phillips found fame as one-third of pop group Wilson Phillips in the ’80s-’90s. Now 42, Chynna has three children with actor Billy Baldwin, who she married in 1995. After a turbulent 2009, the working mother entered an undisclosed treatment facility over the weekend. In addition to tax trouble for Phillips and Baldwin, Chynna was rocked last fall by a public declaration by her older half-sister Mackenzie, who claims she had an incestuous affair with their late father John for more than a decade.

“After much thoughtful deliberation Chynna Phillips has checked herself into an undisclosed treatment facility for anxiety,” her manager, Lizzie Grubman, said in a statement to PEOPLE this afternoon. “With the full support of her family and friends, she is looking orward to her recovery. We ask that people respect her and her family’s privacy at this time.”