I used to worry about my therapist lying to me and her response was that she would never knowingly lie to me. When something came up about a group I was involved with and her family name all over it, I swore that she was the biggest lier this side of hell. She spent 90 minutes on the phone, on a Sunday afternoon trying to calm me down. It turned out she wasn't lying to me.

A similar situation to yours happened to me earlier this year and the therapist lying to me never came to mind.