That sucks. Really sucks. Nothing worse than seeing your child hurt and not be able to stop that.
Take a deep breath, put the negative emotions to the side and recognize your W's inhumane comments for what they are. The caustic, hateful statements of a completely insecure and vindictive human being. If she were that happy, why does she feel the need to repeat those comments to you? I would submit that she is NOT happy. And when this all over she REALLY isn't going to be happy.
What you are dealing with, friend, is a ridiculously spoiled and self-centered teenager trapped in a grown woman's body.
Put her comments out of your head and go about your day. Right now, she isn't worth your time and worry.