I don't see what's tough about it. If* she's an American citizen she's entitled to due process and a trial and sentencing like anybody else. She doesn't lose her citizenship and she doesn't lose the right to re-enter the country. If she's been charged with a criminal offense and she's in custody in a country with which we have extradition, bring her home in irons to stand trial. Upon conviction she'll rot in a cell or get the chair, depending upon the conviction and sentencing.
We need to stop doing all this extralegal crap skirting the Constitution and the legal system. There should be no exceptions to due process. The witchcraft of the day, whatever it is -- treason, pedophilia, or, well, witchcraft -- should have Americans** processed in our legal system with full rights.
* Pompeo says she isn't, but that counts for less than zero. We need an actual legal battle over her citizenship status, not fiat by herpa-derp.
** Even if she isn't a citizen she meets the definition of "US Person," and therefore she's covered by Constitutional protections.