VIII. Maidens who have suffered violence are not to compare themselves with others.
Those handmaids of God who have lost their chastity by the violence of barbarians, will be more praiseworthy in their humility and shame-fastness, if they do not venture to compare themselves to undefiled virgins. For although every sin springs from the desire, and the will may have remained unconquered and unpolluted by the fall of the flesh, still this will be less to their detriment, if they grieve over losing even in the body what they did not lose in spirit.
Source: Letters (New Advent)