My crazy ass speculation is that Kelmommas will kill the WLW. I've thrown this out at Westeros and never got any input back on it. First, Kel and WLW are obviously both in Momemn so the setting allows it. What I envision is that the WLW will be waiting in Esement's bedroom to kill her. And, Kel will be in the hidden tunnels and will see him. And, we don't have to discuss the links he will go to protect his mothers love. He'll sneak up on him and skewer him in the eye. His traditional method. I don't see the WLW killing the Anasurimbor family, he'll be stopped, and this is in my mind, the most likely outcome.