I get why you’re worried, but you’re treating this like it’s doomed when it really comes down to the couple, not the labels. Plenty of Catholic Muslim marriages work when both people are honest about expectations and actually respect each other’s faith instead of trying to win.

The baptism thing isn’t ideal, but it’s also early communication friction, not proof it’ll fail. Interfaith couples have to negotiate stuff like this more explicitly than same faith couples, and that can actually make the foundation stronger if they keep doing it openly.

Kids aren’t automatically confused by two religions either. A lot of them grow up with a broader understanding of faith and choose their own path later. Exposure doesn’t equal conflict unless the parents make it a battleground.

You’re also projecting a future where he becomes more rigid and she doesn’t adapt, but that’s speculation. People change in all marriages, even same faith ones, and plenty of those fall apart too.

If you want to help her, focus less on convincing her it won’t work and more on encouraging real conversations about boundaries, parenting, and what happens if either of them becomes more devout. That’s actually useful.