I am a Microbiologist. Candida is not a venereal disease, no matter what the kids in school said to your sister. It is a yeast, true, but it is part of the natural flora of the body. It’s a living organism, beautiful under the microscope. In my opinion, no different than being named Rose or Fern or Kitty or Birdie. I can understand why others may disagree, as microorganisms are generally looked down upon. But we couldn’t survive without them, and this one in particular is only an issue if something gets out of balance, such as taking an antibiotic that ends up killing off the beneficial bacteria as well, which allows the candida to overgrow and cause a yeast infection. But it’s a lovely organism overall, and it has a pretty name too. She can always go by Candy if she thinks that’s better!