Jessica (28), a therapy client, tells her LMFT during a session that her ex-boyfriend Tyler has been following her to work, has sent more than 40 threatening text messages in the past week, and told a mutual friend, 'If she thinks she can just walk away from me, she's going to find out what happens.' Jessica says Tyler knows she has a restraining order application pending. She appears tearful and hypervigilant. The therapist recognizes a Tarasoff duty-to-protect situation. Under California law, what is the MOST appropriate FIRST step?