I wonder if BS may have been concerned that if he were to put one of his daughters in the mix, first off, which one would he choose.. the oldest??, and then would/might that person be swayed by their bro? Was it known at the time that BK was friends with JS, but even if so, the friendship was tempered with BK's marriage to his own daughter as well. Who could've imagined that both B and H would die at the same time, that his daughter's marriage to the one executor would fail, and that his long-time friend, confidant and business partner would be ousted by his son, to the point where his participation as executor was no longer invited to participate as one of the four executors in their meetings.
I thought the four daughters were trustees but then removed in March 2017? As far as who could have predicted all this would happen.... possibly the killer?