Well the facts for me are that I breath much better and when I went to my dentist last week after only being off analogs for two months since I started vaping, his assistant told me my teeth had whitened two shades. and asked me what I was doing that was new. I told her i had switched and she said way to go keep it up.
So my advice is to tell her she should ask for a refund and join us here to get the real facts on vaping.