isnot,
Talk...then talk some more. This life is wonderful, but, just because you are labeled the Dom in a relationship, its not liscense to act irresponsibly.
Actually, being the Dom is alot of work, you have a huge responsibilty to care for, yet maintain authority of your submissive. A fine balancing act, I assure you.
As I already said, talk with your sub, as Tom also said. Be blunt in what you expect.....then the same from her......then you negotiate the things that will make this enjoyable for the 2 of you.
Now, as for her being obstinent......2 things are occurring....1 you are being tested, pushed, to see what you'll take, or in her case being she was dominant before, shes trying to see your response.
Or 2, shes truly being disrespectful, and then you have a decision to make........thankfully, I dont have to punish often, its a most unpleasant task, and in a 24/7, its alot harder than punishing online.
If you need to punish isnot, you are there, you know what she hates most.....use that. i.e.......spanking a painslut makes little sense as punishment, but maybe, shes into oral, withdraw that for a week.....you get the idea.
Good Luck.