I went back to read your explanation of the arrangement. If I've got it right, this is your marriage counselor, not your regular therapist, and she initiates the texting sessions when her schedule allows, although you were the one to initiate the practice of texting? If I were in your shoes, I would schedule a second session per week instead of the texting. That way, I would get the full session benefit, plus the ability to plan when we were going to meet. Because I agree that it's a lot of money.