What did the girls of the red Mosque prove?

The girls at the radical Red Mosque are taught nothing but a literalist interpretation of Islam. They have been brainwashed into believing that the Taliban are heroes, bravely standing up to what they see as Western imperialism. As such, they regard Malala as a troublemaker, someone who hasn't been properly educated. To them, she's all part of some gigantic Western conspiracy to defame Islam. As far as they're concerned, her attempted murder was all just a sham.
What this proves is that Malala's campaign for female education is all the more crucial. So long as girls are taught nothing but a literal interpretation of the Quran, they will remain under the thumb of their brothers, fathers, and future husbands. That's why it's so important that the kind of education that Malala wanted for herself is made available to all other girls in Pakistan, as this will give them some measure of control over their lives.