She was placed in a group overseen by another consultant. He was from the same firm. In fact he was a principle in the firm.

He immediately started undermining her. He gave her advice that she followed, and then he criticized her for following his advice. He was extremely helpful to women employees from the client, but a complete dick to her. There were many other things he did. She documented what was happening, and complained to the skip-level but he denied it, and they didn't believe her. It looked like she was going to be out.

Then there was a reorganization and several other women from the same consulting company were moved onto her team. They had much more history with the company. They were all high performers. He started doing the same shit to them. When they started reporting the same treatments and complaints management finally listened, and recalled him to the central office.

The story has a great ending though. Once back in the main office, said horrible man then made a wonderful mistake. He started sexually harassing the new corporate council. That ended very badly for him.

So, yeah, sexual harassment happens.