What is what does it mean when she calls you daddy?

It may not always mean the same thing depending on the context, but generally, when a female partner calls their male partner "daddy," it's a term of endearment that indicates a level of intimacy and trust in the relationship. This term could also be seen as a way of expressing submission or dominance. It can be a way of playing around, and it is not necessarily related to familial relationships. However, it is crucial to discuss this term with your partner and understand what it means for both of you to avoid confusion and discomfort.