Social Work Masters Exam Prep

Shelly seeks the help of a social worker for problems she is having with her personal life. She is married to John and has two daughters that are just reaching adolescence. The client reports her husband has been having extramarital affairs for three years. He doesn't try to hide them, and Shelly is quite aware of what is going on. She will not leave John because he is the only income provider and her daughters are very close to their father. What is the ideal therapy for Shelly?