Interesting point. It makes sense, in a way...

The very first sentence of Harry seeing what is going on, describes a "large group" of people walking hooded and with their wands pointing upwards, no mention of followers yet. Only then does it say other people start walking around that core group. And Narcissa is among the hooded people, that was my point - that perhaps there were more hooded people than there are Death Eaters later on, for the simple reason that the wives participate in the walking around hooded, but not in Voldemort's gathering as they aren't full Death Eaters.

Seems likely, yeah... the Dutch translation has the somewhat more logical and also amusingly punny "Dooddoeners", literally "Death-doers", while a "dooddoener" is also a blatant cliché which kills a conversation, so to speak.

I also just noted Winky's remark about how Dobby might end up getting reprimanded "like an ordinary kobold". Not surprisingly, there's also racism from one non-human race to another.