>>545892203
Yes, she's Enamel Eyes, the protagonist of the new mode succeeding A Series of Dusks called "The Syndrome of Silence", which takes place after most of the events of 3.2 but before its epilogue, and including at least some of the characters in pic related.

Here's a trailer for it if you want to spoil yourself:
>http://youtu.be/8h4Y8evasPs