In previous relationships, I have had my girl keep a daily journal entry of her day. I didn't want to know what she had for lunch but I wanted to know her thoughts about her submission, what her fantasies were, how she felt about her obedience, etc. After any new level of intensity or increase in expectations, I had her reflect in a special entry all about her reactions.
Aside from her journal, I had her keep a separate task diary. I would assign daily and weekly tasks to her and she would be expected to write entries about how doing them felt. This was also a place for her to keep a record of punishments, rewards, etc.
At the beginning, she would have to read sections aloud to me. After a while, I would just review them and we would have time set aside each Sunday to discuss them. I think doing the weekly check in was very important and it also gave me a chance to give feedback and direct her further along the path.
Hope that helps, Pastor. Best wishes on your journey.