Hello MasterB and All~
My experience, and as Others here who have responded thusfar have said basically, Submissives are generally Strong PPL. Submissive does not mean doormat, or someone akin to an overcooked spagetti noodle. Most can manage most things in their Lives quite well. Just because Your Wife is a Strong Person does not mean that she has a Dominant personality.
Perhaps the problem lies in a lack of defining what it is You wish for from this Style of Relationship? And Training for Your Needs? Most new (even if they are just new to You) Submissives Need to be Trained by the Dom/me' for Serving that Dominant. No 2 PPL are the same. And many/most new Submissives don't just Give up Control, or quite fully recognize what that is or means exactly. It is basically Train and Take. ie A process. It is effort and work on Everyone's part.
Worse comes to worse and Your Wife is actually Dominant, there are Dominant Couples that do quite well together <soft smiles>.
Respectfully~SidheWolf