What a delicious, long---tantalizingly long----process this can be! Granted, I have various alternative outlets ( and responsibilitys) but I'd let this stretch out as long as it takes.
I got all the time in the world, every step in this process would be anticipated, desired and wished for--- before I ever made it--- whether she was consciously aware of it or not,
Trust and desire are must have. She may wish to be on top--- in charge--- but will have also realized that she might choose to be on the bottom --- still totally in charge, as this position might facilitate the union.
I'd want this to be a long weekend, maybe upscale country retreat. Various ways to fk this up---- far too special to not take time and care...l