Question about Narcissa and the DEs

[a_rude_mechanical]

No: HPFGUIDX 56875

It seems very clear that Narcissa Malfoy is not a Death Eater.  But 
there ARE some married couples that are both members of Voldie's 
circle.  Why Lucius, but not Narcissa?  Is it possible that she 
doesn't approve?  Remember, she was the one who wanted to keep Draco 
out of Durmstrang--ostensibly because it was too far away, but what 
if the real reason was that she didn't want him to attend a school so 
immersed in the Dark Arts?  

My friend offered up an interesting suggestion:  what if becoming a 
Death Eater is invitation only?  Perhaps Narcissa didn't receive an 
invite?

What do y'all think?

Elisabeth, (who believes it possible that Narcissa is an Evans, and 
didn't receive her invite because she is a "mudblood"...)