NR and NYC are right and they offer some really good advice. STOP attacking your wife and her beliefs, it will only make her defend it more. They are what they are, even if you don't agree. However, DO have the discussion how to make the whole relationship more of a partnership. Come up with a list of goals and discuss what it will take to get there. When the both of you can work as partners, and both feel valued as an equal partner, there is less of a desire to fight back.
As far as your finances go, come up with a list of NON-negotiable items like; housing, utilities, groceries, tuition, certain family necessities, savings toward goals, etc. You each should have a budget for your own personal necessities and extras (shoes, clothes, personal care products, etc.). If she decides she would rather give money to the church instead of going to lunch with her girlfriends or buying the new pair of shoes, that's her choice and it doesn't impact your agreed upon goals. Give her the freedom to follow her heart without sabotaging your partnership.