Wow! To imagine that the culture at one of the best engineering teams in the world is this poisonous is shocking.
I wonder if things would have played out differently if she had immediately addressed her supervisor's unnecessary defense. While this seems like the starting point for the harassment, my guess is that it was ingrained in the team all along and would have come out at one point or another. Not that that makes it any better.
Truly horrible experience for anyone to go through and I hope she finds a better place to work in and can perhaps put this bitter experience to help others.