I think this is a great idea. I haven't ever taken anyone with me, but I did have my husband, daughter, and mother send an email to my therapist. I asked them to do it. I told them to be 100% honest about anything they wanted to say. I basically wanted them to tell her how they viewed my life at home, things that have happened to me in the past, and also things I was going through in the present.

My therapist did not disclose to me anything they sent her. She may have made a comment or two but not much at all in detail. I know that therapy is supposed to be all about the client, but I also think it can be helpful to see the world in which the client is living in. For me, this was very helpful. My therapist also felt that she got a clearer picture as the what my life was like outside of therapy.