Board Thread:Boruto Discussions/@comment-25054442-20170628145646/@comment-2112031-20170628153743

I'm gonna go with "Jailed", I highly doubt that Boruto and Mitsuki would still be on good terms if Boruto had witnessed him kill one of their classmates, even if it was under orders from someone else. I also highly doubt that, if caught, Sumire would be exiled. The village typically imprisons those who threaten it, rather than letting the perpetrator walk away scott free with the possibility of trying it again in the future.

Also, Sai, Naruto, Shikamaru, etc. know who Sumire really is and that she is behind the incidents, so I highly doubt that her classmates could help her avoid detection, assuming that they'd be willing to help her in the first place.