Funny story, when my dad remarried..he married a conservative Christian (who thinks witches and Harry Potter are the work of the devil, etc). On the surface, he's the decision maker...but in reality that isn't the case. I lived for a summer in Mississippi and noticed this for most couples in the local church my dad went to. It made me glad I opted not to marry.
And I see Jessa and Ben fall into that category. She makes the decisions while he meekly agrees...but on the surface he's the head of the household