Baez doesn't care if no one will hire him as a defense attorney ever again. He's going to write books, do interviews, and ride this gravy train for all it's worth. Then when his 15 minutes are up he'll go back to selling bikinis.
Actually, if I'm understanding correctly, the prosecution would be limited by what the defense asks, so if they ask her only 1-2 questions, the prosecution would be limited by the scope of those questions. Of course, she could be up there all day due to the eternal sidebars that would ensue.