Also, don't be afraid to reassure that you are enjoying it as well. As was said above, she seems to enjoy it, but has some hangups about letting herself enjoy it. I still don't know if pet realizes just how appealing her kinky submission is to me, but I've tried to let her know. It can be difficult to reconcile the roles of professional woman/mother/sex slave, but we are in the trenches with you trying to figure out what works for us.
As a final bit of advice, what seems to have really helped with us was going to more of a full time arrangement. One of the major problems we had before that was my not knowing when we were "on the clock" so to speak. If I'm uncertain that I am supposed to be playing the role, and coming from a childhood with pretty strong "gentleman" training, I'm not going to be convincingly dominant. Committing to an arrangement where I am in charge, all the time has made the role much easier to execute.
Regards,