Mateo is a counseling intern. He is assigned to work with Isabella. During Isabella's first session she gives Mateo minimal information about her reason for seeking counseling. She chats a bit about her job and about her family of origin. Though Mateo thought the session went reasonably well, Isabella never returns for a subsequent session. Mateo endeavors to reach her, but there is no response. About $18$ months later, Mateo receives a subpoena from an attorney representing Isabella's husband in a divorce proceeding. Mateo should:

Immediately confer with his supervisor to understand the office policy, and then prepare to potentially turn over the note from the one session and to testify regarding the limited information he has.

Send the attorney a letter with a synopsis of everything Sarah told him about her job and her family of origin.

Ignore the subpoena. He only met Sarah once, and she never mentioned she was married.