Wow!
That could be a big adjustment for her.
We have mennonite communities here. They practice “plain” living. The Amish broke away from the Mennonites and are more strict about being plain, but its the same roots.
That means few modern conveniences, the women always cover their hair and make all their own dresses for themselves and their daughters. Some mennonites are not so conservative and fall closer to mainstream protestant churches.
The women rarely work outside the home, and if they do, its only as a teacher or nurse or similar and only until they marry. Education for girls is not encouraged. Mostly the kids here are homeschooled by their mothers.
It would seem really unusual to me for the wife of a practicing Mennonite to be free to practice Catholicism and raise her children in the Catholic faith. They see men as the spiritual head of the home, he teaches his children the bible and leads daily worship in the home. The ones here take turns hosting the Sunday gatherings in their homes and the man of the house leads for that day. Any man allowing his wife to be Catholic and raise his kids Catholic would lose face with his peers.
They are nice people, they do a lot of charity and social justice work. I can’t see anyone staying catholic in such a marriage though. Based on the ones I know, I’m guessing such a mixed marriage would not be allowed unless the woman agreed to live a ‘plain’ life with all those rules, and joined their religion and renounced her faith.
MarysRoses