"She should know better than that," said Judge Wayne Salvant.
Tonya Couch failed a drug test back in March and was released in May after making bond.
Drunk driver will walk free on 2 April after serving 180 days for each person he killed.
No date has been set for the return of the Texas teenager and his mother from Mexico.
Ethan Couch and his mother were found in a Mexican resort town on Monday night.
Authorities believe Tonya Couch might be with her son, the "affluenza" teen who killed four people in 2013.