Firmly tell your W that you do not agree with her actions and that she needs to respect your D's wishes. It's typical WAS behavior in that she thinks everyone should agree with her and doesn't understand why everyone is not following in step with her.
You have to send her a message first that what she decides to do with her life is one thing. But what you and everyone else decides to do is up to them.
M-43 W-40 2D - 9 and 5
Emotion, yet peace. Ignorance, yet knowledge. Passion, yet serenity. Chaos, yet harmony. Death, yet a new life.