I would do absolutely nothing. If she is blocking comments from her site, then that is her right. I don't approve of it, but people who behave like that will eventually reap what they sow. The better question is how important is it to change this person?
This woman is only one girl out of 7 billion people on this planet. What exactly is the point of wasting your hours to change this woman, whom you call a bint? If she is a bint, then she is nothing to you. If she refuses to take criticism that is negative, she is nothing. If she then sends you notes and then denies they existed, she is worst then nothing.
Any person who acts goes out of their way to keep their ideas true are not worth your time. The more you pay attention to this person, the more you acknowledge that their ideas and statements has actual value. Make your peace, move and and ignore them, they will not bring you happiness nor any satisfaction to what you need to do.