I don't think she did.
Like someone previously mentioned, in Baptist circles, something like this is considered heretical.
Baptists and Roman Catholics don't hold to the same doctrinal teachings AT ALL.
So for her to do this, either with or without her husband's knowledge, it presents all kinds of HUGE issues, in their marriage, extended Baptist family, his position as pastor, their friendships and fellowship in the church, etc.
And if it was with his knowledge, he's definitely going to be looking for a new job.
I just can't bring myself to believe this is what happened, only because it's essentially unheard of, for the wife of a Baptist pastor to convert to Roman Catholicism.
jmo