Here's an explanation, but it's probably not of the sort you're looking for.
If any of that stuff exists - highly, highly doubtful
- then it is, by definition, expensive and difficult to create, manage, maintain and hide. And so if it does exist - and I'm sure it does not
- but if stuff like this is ever invented, your sister will never be a candidate for such a treatment unless she becomes President of the United States or an international assassin.