I suggest invoking the 24-72 hour rule...just back off and let her work herself out of her state...I have teenagers and that rule works pretty well with them, and mlc'ers...
And yes that there is indeed teenager behavior...
They are not going to open up mind or heart space until their anger/frustration/etc is simmered down and/or burned out...
Just go about being your awesome self, "as if", and maybe bring it up again in a day or so, unless she does first, naturally...
Hang in there, my friend!
In the depths of winter, I finally learned that within me there lay an invincible summer. - Albert Camus
Uncertainty is the very condition which impels people to unfold their powers.-Eric Fromm