Lockyer was arrested last month at a relative's home in Orange County. Police say they found methamphetamine and smoking paraphernalia in the room Lockyer was sharing with her 9-year-old son.
Lockyer has pleaded not guilty to the charges. She was released on her own recognizance and re-entered drug rehab.
Lockyer is the estranged wife of state Treasurer Bill Lockyer. She resigned as a supervisor following a sex scandal with a man she met at another rehab clinic.