The problem with Geneviève Dieudonné is that she is a named character that already has a separate Ip (which mean it’s “protected” and her lore can’t be changed that easily)
During the End time she currently serve Neferata (though they both dislike each other) in the World Edge Mountain (Silver Pinnacle) which is quite far from where we are
Basically on the centre/right side at the latitude of Karak Kadrin
The only time we see her (even though she is not named, it is implied to be her) is when she bring messages from Neferata to Gelt and then to Vlad Von Carstein
She is a Lhamian (The new vampire become the same kind as “parent”) which is why she is working with Neferata, having her change kind would be weird, weirder than even Kerrilian taking on the look of the High/Dark Elves
Also having a Blood Dragon and a Grail Knight would never be ok, sure Geneviève has been known to work with Grail Knight/Bretonnian but Blood Knight and GK hate each other as much as a Dwarf and a Skave/Green skin
Strigoi (be it normal or Kings) are nothing short of Beast, they hardly use any cloth/weapon and would fit more for an enemy Lord/Monster (Still intelligent iirc)
Geneviève should only appear as Fluff, not as an NPC as it wouldn’t make sense
But even the Dev are making jokes about it