These terribly unfortunate girls' deaths, IMO, have been caused by both political, and cultural forces. This is not a "random" double murder, nor a peculiar double suicide. IMO.
I have spent an extended amount of time in KSA, and so I have a unique perspective on the treatment of women and girls in that country and culture. What these girls were doing in the weeks and months prior to their deaths would not be at all tolerated in their culture. This tragedy has all the hallmarks of a typical "cultural punishment" double murder, IMO.
But I don't think these sisters' deaths have anything to do with the Kashoggi murder.
And I can't help but notice that the drawings initially released portray 2 women who appear to be of AA descent-- and look nothing at all like the pictures released today. Interesting, considering the reports are that the bodies had not been decomposed at all, nor damaged, so facial features should not have been too badly distorted.
I think there is *zero* chance this was a double suicide. And I don't think it will ever be solved.