Your client is 15-year-old Jenny, who was brought to therapy by her parents because she suddenly seems depressed, withdrawn, and angry at them all the time. Initially, you had a family session in which you explained the laws and your policies regarding confidentiality and learned that Jenny had seen her physician recently to rule out physical illness as a cause for the change in her behavior. In a subsequent individual session, you learned from Jenny that she is experimenting with marijuana. She agrees to stop even occasional use to see if abstinence improves her mood, and you agreed not to tell her parents that she's been experimenting. However, her parents have just called, requesting a session without Jenny to obtain a 'progress report.' What should you do?