I am Catholic, and I always thought that after marriage pretty much anything sexually was permissible so long as it remained monogamous. I was wrong. My husband and I attended a pre-marriage education class (Pre-Cana) for all couples who want to be married in the church. One lecture was on sex. We got the usual info about "natural" family planning and only having sex if we were ready to welcome a child and were told that sexual acts that didn't lead directly to conception were no bueno. I looked around the room during this, and based on people's faces, I think it's safe to say that no one was really buying this bill of goods. Incidentally, we were also given a book about sex in marriage, and one section talked about thinking of Jesus watching over you as you have sex to help you conceive a healthy child. I threw away the book after that. (Incidentally, I got married in 2009 and not 1899).
So I'm sure that in Jill's faith, sexuality isn't 100% open even after marriage!