How about a voting license that needs to be renewed every 30 years? You have to pass a test that checks if you are capable of thinking objectively or something like that.
Any type of criteria that is not absolute (like age), can and will be used to exclude certain groups of people from voting.
How would a police report have proven anything anyway? It simply shows that someone claimed it happened. And she probably wouldn’t have come to that conclusion if she wasn’t scared by the propaganda in the first place.