getting Christian advice from a non Christian

[i.<3.cheesysmiles]

My MIL often gives me "Christian" advice, and she is not a Christian. For instance today, she told me that she knows a conservative Christian couple (who gave my BIL Love & Respect, who then gave it to us). She says they looked through the Bible and felt they should have a Christian marriage and now the DH is the primary provider and authority and makes all the decisions and the wife takes care of the home and honors and affirms all his decisions without question. To me, this is not a Christian marriage and I doubt she knows intimate details of this couple's marriage. Yes, the head of household is the man, but he should seek God's wisdom in decisions and also love his wife and take her opinions and concerns into consideration. I feel like she is telling me to have her son (my DH) make all the decisions in our marriage and just go with it and she does not understand the whole seeking God and praying before decisions and being a spiritual leader (which is not happening).

I really do not know how to respond. This is not the first time she has given me "biblically-based" advice that was totally off. She loves to throw out the verse about wives submitting. She knows that my faith is important to me, so I see it as an "angle" that she uses to get me to do things her way as she can be very controlling. how do I respond in a respectful, honoring way?