No, I don't want her becoming anyone's bitch. That's not believable & I don't want Sophia's persona drifting all over the place, in a way we've just witnessed via the 2nd side job. If Sophia ends up enjoying the tasks, taking the initiative, or submitting too readily, it ruins the whole deal IMO. Yet, regretably, that is what I think has been telegraphed, as early as the first task. If protagonists in stories of this type do any of the above they end up too far out of character. At that point there is no blackmail. If Sophia isn't forced or tricked into doing things on the blackmail route(s), the story might as well be called 'A Cheating Wife & Mother.' This whole fantasy revolves around gaining a measure of power over a beautiful, intelligent woman. It doesn't involve turning her into a type of sex slave.
So far, L&P has got the balance between coercion & partial enjoyment just right. It's been one of the more successful routes IMO because of this. It's certainly an area where the Dev's storytelling ability is vital.
There has been confusion in the thread IMO. Blackmail routes & their possibilities are far more subtle than BDSM. I'm not into dungeons, whips, masks, chains, latex, rubber, et al, ad nauseum. [Just thought I'd clear that up, in case anybody was in the least bit interested]. As I've said before, coercion is an integral part of corruption games. It is almost essential & has been present in every game/VN of this genre I've ever played. Strangely, incest, although common, doesn't appear as regularly.
I want Sophia to complete the 12 tasks, more or less unwillingly & then go back to being herself, albeit more open to new experiences & definitely more corrupt & corruptible. As she is able to 'reset' (not in a particularly realistic way, it has to be said), after every out of the ordinary sexual encounter, this should be achievable.