[So Zeref is the submissive one in their relationship? She wouldn't have pegged it that way, but she approves that her master holds the reins... literally it would seem.]

Well... perhaps I can see about getting one for you. I was thinking of getting the two of you an anniversary gift myself, so perhaps that can be mine to you.

[And maybe some band-aids for Zeref depending on how gentle Mavis planned to be.]