Did Hillary lie in to the Congressional investigators? I didn't hear anything that sounded perjurious. She was diversionary, confrontational, intimidating, and sometimes non-responsive. In other words, she was an excellent witness at what amounted to her own trial. She demonstrated how, by most accounts, she's been a good SoS. You can't easily make her back down or lose composure even in high-stress situations.
If she was more that those poor widdle Congress types could handle, that says more about them than her. They should have been better-prepared and more competent at questioning, especially since most of them are trained attorneys.