I was going to ask for clarifications, but I do not want to pester the GM with hypotheticals that will never happen so I will just say that in my understanding there is room in the dwarf mindset for a distinction between vampire in the metaphysical sense and vampire in the political sense, just as there is between Skaven in the biological sense and subject of the Underempire in the political sense... and it would probably be about as hard to drive that wedge in for a vampire that wishes non-hostile reactions with the Karaz Ankor.
For what it's worth Mathilde is probably the person most likely to manage it, which does not mean it would be easy.
For what it's worth Mathilde is probably the person most likely to manage it, which does not mean it would be easy.