I didn't fully understand this from the article but, with "adult daughters" they would mean, unmarried women? I mean, if "all" adult women were send away to be

I didn't fully understand this from the article but, with "adult daughters" they would mean, unmarried women? I mean, if "all" adult women were send away to be married elsewhere then they'd have to bring in "new" women to marry the local men, right? So, local men would also marry local women in that they did find graves of families (ie. with mothers and fathers)? But they don't say that. Maybe women were married at a very young age and men could marry at a much older age. Maybe men could marry multiple times, women would often die in child birth.