Yes, McGarrett and Danno discuss her release in the final scene. We don't see it on screen.

Valid points - the scenes in 'Europe' were almost pointless and Vogler is never mentioned until Part 2. Part 2 is very rushed. Also, it proves to be a weaker episode because it's mostly McGarrett that we follow around. The team isn't seen except Danno who has to baby-sit Vogler (by pulling his gun!). The better episodes include the whole team throughout. At least in my opinion.