HOUSTON (AP) — When Cardinal Daniel DiNardo first met Laura Pontikes in his wood-paneled conference room in December 2016, the leader of the U.S. Catholic Church's response to its sex abuse scandal said all the right things.

He praised her for coming forward to report that his deputy in the Galveston-Houston archdiocese had manipulated her into a sexual relationship and declared her a "victim" of the priest, Pontikes said. Emails and other documents obtained by The Associated Press show the relationship had gone on for years — even as the priest heard her confessions, counseled her husband on...