> Therefore the court of public opinion is the only court that has solid jurisdiction, so to speak.

based on what his public info shows about his location this medium post (and the ensuing public outrage) cops in that country will have to press charges (in case they haven't been pressed already).

There is a high chance he is a flight risk so they will book him, _unless_:

  - he is actually a passport holder of that country (doesn't seem the case), and 
  - has a proper address registered as is law, (many Brits don't care since British law doesn't require it)
  - has a strong social family network in that country, (unlikely)
  - has a job in that country (contracting/freelancing doesn't count here)

... then he is looking forward to spending 6 months minimum in "Untersuchungshaft" (hard time) or for whatever length of time investigations are ongoing (until trial).

What I'm getting at is that this is a very serious allegation that _will_ result in hard time if convicted but also until he actually gets his day in court! But for that to happen she needs to do more than a Medium post (make a statement with the cops which can be scary but shouldn't be if she actually brings a lawyer). In case she doesn't then it needs to be considered a character assassination which itself is a felony. In any case posting such a piece is legally risky for her and if she would have bothered getting a lawyer, they most certainly would have advised her against it. The best option for her would be to go through the court system of where he is currently located.

Most other options have a high risk of this going nowhere (cost + extradition etc) and even give more room for speculation and he-said-she-said which shouldn't (imho) be the goal of the metoo movement and indeed it should be called out for mob-justice.