Mackenzie Phillips' Secret: Her Family Reacts
Mackenzie says that when her former stepmother found out about High on Arrival, she vowed to do everything she could to discredit its claims. "She's either protecting the Mamas & the Papas brand for her own reasons, or she is having a textbook reaction," Mackenzie says. "She's embarrassed. [She wants to] sweep it under the carpet, protect the abuser. ... I don't have a history of mental illness; I have a history of addiction. That is not mental illness. I feel bad that Michelle would do this."