It looks to me like usual alien behavior. Last night she was clearly making a big fuss over a minor thing (going to the party). Why is it such a big deal? Because she is trying to pull your chain and start a fight so that she can "prove" how bad things are. This is just all par for the DBing course and I think that you know that.
My H used to make comments about my validating too. He said that I was patronizing him and that I sounded like a reflective listening seminar. My advice is not to stop validating. It is better than arguing and at least she is noticing.
Christine
I am the master of creating positive energy and love in my own environment. I am the source of love in my life. It starts with me! This energy radiates from me! It gives me strength, courage, wisdom and grace!