Consequently, she went on about how "now she is the one to blame, as always" and tried to throw the blame on me, etc. I just saw it as her trying to guilt trip me into letting her walk all over me; she was clearly upset by it, but I stood by what i said, and repeated to her that I didn't appreciate the way she overlooked our plans. I then promptly left the conversation to avoid any more unnecessary drama.
But I now have a bad taste in my mouth. Was I right, or was I wrong? Could I have approached it any better?