Interesting point and one I discussed last year when it became clear that the legend of Persephone mattered at some level.
There are two primary causes for the tight coupling of mythology.
- It's mythology playing out in that Salome really is Persephone re-incarnated and the story is following that arc. That's interesting from a story telling perspective but not from a practical one. It raises a ton of questions about how people 3000 years ago could anticipate events in 3303. If this is the case then to further the story it makes some sense for her to return or be revealed in a system whose name would match that revelation in mythology.
- It's code. Salome and or the Dark Wheel are using mythology which is probably larely forgotten in the ED World. This is much more likely. It gives them a reason for using terms from mythology to discretely pass information. If this is the case then the system would make sense from the ED world perspective not mythological perspective. It may be that a hint is dropped with a mythological reference but there's no reason to believe the system itself has mythological significance.
I believe it's the 2nd option and therefore something in or around Lave makes much more sense than something like Ishtar which would represent the first case.
It's definitely the second option.
When Salome was rescued from the prison transport, the ships that were destroyed (ie. her escort) all had names associated with the idea of the Seven Veils.
I hypothesized that this indicated that an external faction (ie. not CoR) was involved and that the ship names were their way of sending a message to the rest of the galaxy (at least those who were able to understanding the message) that they had Salome.
Drew confirmed this (in a PM).
Given that the faction supporting Salome has used the Seven Veils concept as their 'calling card', I feel that Ishtar is still an 'in play' location, despite not being Greek.
I always felt that the Dark Wheel was too 'easy' - in much the same way that a 'Thargoids' story would have been too obvious (again, as confirmed by Drew) - so I don't feel they are significant.
The amulet found at Kahina's initial disappearance is (very effective) misdirection.
Edit:
I just got back from a lunch which involved far too much Yuengling. Any mistakes in the above are to be blamed on that.