I find it extremely hard to believe that japan's higher ups would stop at this.
So either they pull something shady like monitoring her from the shadows to gather more data and sending her to some facility against her will if that proves fruitless or all this 'realism' the author tried to force on the series will come off as even more unrealistic, but then again, I wouldn't mind if the author just tried to make us forget this shitty arc ever happened and went back to the fluff.