How to Gently Guide a Friend Back to the Catholic Faith

Andrew Morgan: I have a friend who grew up Catholic left for the LDS last fall and is now rethinking her decision. Do you have any recommendations on how to gently guide her back to the Catholic faith? If she's open to chatting with Steven, I'll put the two of them in touch. Are there Mormon exclusive arguments for God's existence because the normal theist arguments don't work, do they?