Several high fructose sweetened soda's are more harmful to the health then meat eating. I remember reading in her diet counsels that excess sugar is more harmful to health then meat eating. I don't see so much meat at potluck, but i see lots of heavy frosted cakes, and pies and cookies, and often ice cream.
What about her comment cheese is unfit for food? Cheese, or cottage cheese is often a primary ingredient in vegetarian foods.
We are talking about health here, not about heaven or hell. Our works do not get us to heaven, nor do they send us to hell. It is our relationship to Jesus, faith in Him, and in what He did for us at the Cross. Knowing Jesus and being free from the power of sin, in increasing measure will impact our behavior, but that behavior will never replace the sacrifice of Jesus.
If we reject the Holy Spirit we determine our destiny, regardless of how wonderful our behavior is otherwise. It is a solemn matter between you and your maker.
Tea, coffee, soda, cheese meat... i don't know how solemn these issues are, but they are health concerns, and can be about habit's that may indeed shorten life. When you are in a diabetic coma from poor health habits, or on the table with a heart attack, or have nerves or headaches, suffering from caffeine addiction, or have teens suffering from adolescent obesity from 6 soda's a day, and cheesy fries, and chips and burgers.... health issues seem to speak for themselves. God wants everyone to suffer less.