Some pointers
Somewhat before a Dark Elf reaches adulthood (which is around 120) they undergo the Test. This is a Test o prove they are loyal to the Dark Elf goddess Vierdri'ira (in case of females) or Baraeon Ca'Duz (in case of males). If they fail they're either killed or turned into a drider. So, if it turned out that while she was an acolyte she didn't really worship, she would need to undergo the Test, not get sacrificed.
Vierdri'ira and Baraeon Ca'Duz are equally powerful (although both of them think he/she is stronger than the other). This is reflected in the Dark Elves,Âmen and women in Dark Elf society are also equal (although the women think they're better than men, and the men think they're better than women). So, if she tells a male dark elf patrol that she is on a mission for the Goddess they are not going to help her.
Hope this helps!