The "apology" came because she had committed slander against People of Praise by falsely claiming they had been labeled a hate group. She apparently was notified by lawyers either for her network or for People of Praise if her legal period, and so apologized the very next day right at the beginning of the show, saying she had confused the name with that of some other group. The others chimed in as to how it was an honest mistake and they're glad it was fixed.
It wasn't a personal apology directed at ACB. It was CYA to avoid an imminent lawsuit.