My slave and I are thinking on how she should adress me. Most of the time it will be Mistress. But in Dutch you have the personal pronoun for second-person U like for German you have Sie and in French Vous. This personal pronoun is used to be more polite to an other person like a teacher or higher ranked person(judge).

I think my slave should if neccesarry adres me with U.

Maybe I can get some advise from other people who speak Dutch, German, French or any other language that uses a polite second pronoun.

Thanks