Vindicator is a Catholic, and her religious affiliation has been a plot point in few stories.
Issue: Alpha Flight II: -1
Synopsis: Note: this is a "Flashback" issue, introduced and concluded by Marvel creator Stan Lee. Logan helps a nervous Mac to his hasty wedding ceremony, to which Heather's parents object because it isn't Catholic.
Issue: Alpha Flight II:16
Heather's Catholicism and Flex's forearm save her from Dargil.
From: Ronald Byrd, "Unofficial Wolverine Chronology, Pt.3" page, last revised 13 November 2001 on "The Danger Room" website (http://danger-room.net/modules.php?op=modload&name=Sections&file=index&req=viewarticle&artid=11; viewed 21 June 2006):
Logan is also present when the Hudsons renew their vows in a Catholic ceremony months after their first, less formal marriage