Listen W1, W is not an enemy. Hey man, you love W and is a right feeling to have. It hurts to see somebody that you trusted and thought you knew converted into a selfish queen of the universe. Well, there it is: selfishness embedded into a net MLC period. Feel sad for W W1, she is lost inside.
There´s no need to tell her nothing. C´mon man, she knows everything but nothing is going to stop her to get what she wants except herself. But she must be willing to look inside. When? Who knows...
Keep working on yourself, be the lighthouse for the kids. They need you there, shining.