preaching healthy lifestyle?

[Kate]

An aunt of mine was very ill and recovered. She was the 2 martini a day type. After she receovered she started getting into organic, natural, organic, chemical free, free range, vitamin k, protein shakes wheat grass blah blah blah. All she does is preach her lifestyle and spam my inbox from these quack doctor herbalists. My husband studied medicine and she flat out corrects him saying out eastern medicine is the way to go and that modern medicine is poison. BTW modern medicine saved her thank god...anyway I always ignore her and walk away but this is starting to get under my skin, she undermines my hubby in front of everyone saying how medical professionals make money off of people's illnesses. So now she buys natural (of course not regulated) herbal remedies to balance her pH and cleanse her toxins. How do I shut her up before I tape her mouth