The Catholic Church is renowned for its abilitity to see the world through eyes that suit its doctrines.
My wife is a Catholic, and her marriage was annulled - the church was far more concerned that her first husband refused to attend his children's baptisms than his physical violence towards her - it was his refusal to uphold their Catholic upbringing that allowed the marriage to be annulled - not his violence. This means that in the eyes of the Church, my wife was unmarried, and therefore we were allowed to marry in a Catholic church with a full nuptual mass, even though i am an Athesist. I simply had to confirm to the priest that any children we had would be brought up as Catholics - which she was, i have no problem with religion, but it is an interesting viewpoint from the priesthood.
Therefore, in line with this thinking, the current Mrs Forsyth's devoutness would not be questioned, since she has apparently led a good Catholic life - and they can gloss over ther husband's past quite easily.
Remember, this is an organisation who's response to discovered child abuse is simply to move the offender elsewhere to offend again - 'what the eye doesn't see' is a phrase that could have been invented for the Catholic view of the world.