Jeannine Gramick, a Roman Catholic nun and co-founder of a U.S. ministry for gay and lesbian Catholics, met Pope Benedict XVI only once, by chance, on a plane flying from Baltimore to Rome in the late-'90s. Because of her work with the lesbian and gay community, Gramick had by then been under investigation by the Vatican for more than two decades. The encounter was serendipitous, Gramick recalled Monday after hearing news of Benedict's resignation. Gramick and leaders at her ministry had been worried that she would be excommunicated. She was traveling with the head of her order to Munich, via Rome, to pray that she would keep her place in the church. When she boarded the plane, she saw Cardinal Joseph Ratzinger, who later became pope, sitting with two empty seats beside him. She mustered her courage and sat next to him. "When he found out who I was, he just smiled and said 'Oh, I've known about you for 20 years,'" she said. Ratzinger helped lead the investigation into Gramick's work with gay Catholics as the prefect of the Congregation for the Doctrine of the Faith, the Vatican-based organization that oversees church doctrine.