Got a shock when I saw this on my 3DS. No idea who she is but you can be sure I will date her in the AKB game on my vita when I get back.
Looked for proof online but her barcode mii from last year looks very different from this.
All her info is the same as what I found online. According to her google plus, she is indeed in Tokyo doing a play at Meijiza theatre in Nihonbashi. I must have street passed her in Shinjuku or Takadanobaba.