Then send them to the PCA (Westminster in Atlanta, perhaps - see below) or the LCMS.
Here's a good way to hook them into Westminster:
"May 20, 2007: John Rutter's Requiem
Please join us on Sunday, May 20 at 7:00 pm as our Chancel Choir along with Chamber Orchestra players present John Rutter's Requiem. A reception in the Fellowship Hall will follow after the performance. Nursery will be provided. No admission charge or donation required. All are welcome!! Excerpts from notes about Rutter's Requiem:
- Completed in 1985, it does not adhere strictly to the conventional Catholic liturgy, but combines texts from the Requiem Mass and the Book of Common Prayer.
http://www.westminster-pca.org/
My mom was raised Presbyterian, my daughter's best friend is a Calvinist Presbyterian, and my daughter is attending a Presbyterian college (lots of Catholics there though.)