Unfortunately the reality is, that even though there is a lot of implied criminal activity on display with the Epstein files...there still isn't a lot of hard evidence. Without that, you aren't likely to get a conviction in court.

Someone mentioning a crime in an email, doesn't count as proof that a crime occurred. It just points you in the direction you should investigate further. If you still can't find any actual evidence to back up that allegation, then you still have no case.