One of Boney's greatest strengths as a writer is his ability to give his characters natural feeling... complications (and I'm deliberately not using flaw here).
For Wilhelmina specifically, there was WOG at some point that in terms of Divided Loyalties that could be chosen at character creation, she had Nepotism. And much like Anton and Incompetence, she turned around and went "Actually, fuck that". Except now she went too far and is a real hardass on her family. Her sons totally had it coming, but Eike's mother might not, and it's not been easy for Eike either (though I don't think she's crossed a line, and it's kind of justified in a Noblesse Obliege kind of way).
The thread, meanwhile, has been doing a happy dance and going "Yay, Nepotism for Eike!".