How to answer an insulting statement on marriage equality

I don't know what program this is, but it sounds like something from Great Britain. At any rate, the older woman claims, in an insulting tone, about how marriage equality will hijack her marriage. While it's easy to allow yourself to get angry when people make statements like this, remember that when folks like Brian Brown says things like this, they want you to get angry so they can play the victim. We should remember that our answers need to be not out of anger, but firmly committed to our relationships and common sense, just like the young lady debating her and a member of the audience: