She decided to consult a mental health therapist to deal with her anxiety.

therapist 是由 therapy（治疗）加上后缀 -ist（表示"从事某种职业的人"）构成的名词，指"治疗师、理疗师"。 mental health therapist 特指"心理健康治疗师"，专门帮助人们处理心理或情绪问题。