She worked her butt off on that speech. As someone who drafts questions and makes arguments, you don’t just rattle off what someone else wrote for you. That speech was from her deepest convictions.
She played it brilliantly. Most of the media was hoping Collins would announce she was voting no. As a result, they all carried the speech live so the whole nation would see Judge Kavanaugh's hopes of confirmation go down in flames. Instead, Senator Collins methodically took apart all of the allegations against him, and presented a well thought out case for his confirmation. I'll bet a lot of network executives were kicking themselves afterwards for their decision to carry the speech.