they mention interbreeding like the females had a choice.....
If those people were anything like the tribes/groups we have some history on not long after-that probably depended on the status of that female’s family in the group/tribe-if they were leaders/had lots of stuff to trade, then a man would probably have to take her into his home/tribe and maybe pay in goods-or no sex. If she was just from a family of no influence, the guy might just tumble her in the bushes with or without permission...
Either way it happened, I doubt that mutual attraction was involved most of the time-not fun to be a female...
They probably did. Not in all cases of course but in most.