Love your dialogues, the writing of the story is very good. The only problem is, some conversations drags just for a little bit too long... But that's probably my nitpicking.
As far as the bondage goes, I would really love some closed up shots (like, when you say that Dolly ankles tied to a chair legs or Samantha tries to move her tied up legs), shots from different angles and such or even the ability to choose what or how to bind (or even bind at all) body parts next. But since it's your game, it's only up to you to decide what to do with it or what to add. Anyway, good job so far and a promising start, as for the first game it's really damn solid!