A speculation with some spoilers from the last episode

So in the last episode when Loukauskis man reveals that they have an informant in the german police force the scene from when the picture was taken ran through my mind. Didn't Nataschas girlfriend act weird at that scene? And didn't she have her desk right at the place from where the picture was taken? It seems to me that she is the mole. Will make for more interesting drama in an additional season.

Edit: I went back and looked at the scenes. Just wanted to make sure I wasn't mistaken that it's Nataschas girlfriend.

Here they are in bed: http://i.imgur.com/KsavJ80.jpg

And here is where she's sending pictures of the team to Loukauskis: http://i.imgur.com/IXEFGJE.png