"Unless it's a statement issued by our family attorney, Tamar Arminak, please take everything you read about Amanda with a grain of salt," Lynn recently told People magazine.
Several reports said the former Nickelodeon star was involuntarily committed to the UCLA psych ward in late July after she started a gasoline fire on the driveway of a home in Thousand Oaks, Calif.
Lynn said the Bynes family has not released any information about Amanda's treatment or diagnosis and wants to keep the situation private.
"We appreciate everyone's heartfelt support and we hope that she can get some privacy and the respect she deserves during this trying time," she said. "Both my husband and I love Amanda very much and we know that she will get through this situation."