My partner gets nervous every time I see my psychotherapist because she doesn't like the idea of me talking about our relationship. For her, it's anxiety-producing because she fears there are things I tell my therapist that I don't tell her. For me, it's anxiety-producing because I feel like my therapy sessions should be a safe and confidential space for me and because I feel like having that space has made our relationship better overall. How can I assuage her fears and anxieties without feeling like I have to, a) tell her everything I say in therapy, or b) lie and say that she doesn't come up?