Very good game in this sub-genre: stimulating graphics, great writing, appropriate pace, thought out interactions.
Some things I'd like to see, if I may:
+ Pregnancy on Bella's submissive path
+ Toned down attitude of Bella on her submissive path; the state of true submission should be more obvious
+ Expanded interaction of other characters with the submissive Bella (Mrs. Smith's reaction to Bella's submissive nature was a depressingly empty promise)
+ Increased depravity during interactions with a submissive Bella
Full disclosure: I'm biased when it comes to slave play.