I do agree with your point about prioritizing some Dommes (or in your case a single one) over others when resources such as time or money are an issue. I just generally don't try to compare or rank women I have relationships with as each are unique and special in their own way. But, sometimes conflicts do arise when I do have to choose who to spend time with, I just don't base that decision based on being dedicated to a specific Domme every time.