What Catholic doctrine is she going against?
I’m not surprise you’re in a muddle. First, the discussion too often switches to the Catholic Church’s Katie-bar-the-door policy aimed at preventing non-Catholics from receiving Communion on its turf. There are many exceptions, grave or humorous according to your stance on the issue, whereby outsiders slip through the net and receive contraband sacrament (the writer Michener was allegedly among them), but that’s the Roman church’s rule, plain and simple. But you want to know what happens when your daughter, a Catholic, ventures to Communion in a Protestant church. What rule has she violated? In my view, she has violated none. There is no exact teaching. Catholicism–at least its lawgivers–contend that valid Communion takes place only under its auspices and requires full agreement with the doctrines of the church. Without this “full communion” with what it regards as the only actually true church (see the latest pronouncement), the real thing doesn’t happen. That, of course, is open to
