I will admit that i have generally enjoyed your story, up until the part where Alice and Edward confess to lying and keeping secrets from Rose regarding having a baby.  Granted, Alice should not have one until she is ready, but to belittle Rose and her ability to cope is appalling.  Furthermore, the main component of a poly marriage and a domestic discipline relationship is communication and trust.  For the husband and head of household to be granted the ability to make and enforce rules through physical punishment, TRUST is the key element.  Not occassional trust, no trust when its convenient, but ABSOLUTE trust.  He forfeited that when he kept Alice's "secret".  And his little monologue about sometimes you have to weigh the needs of each wife and sometimes keep a secret to protect one over the other is complete crap in this particular situation.  This is not a minor issue.  It is one that the family had discussed at length and if Alice changed her mind, which was her right, then it should have been immediately addressed with Rose whether or not she was in a perfect emotional state.  I feel that you dismissed and belittled the very real hurt Rose has suffered from their betrayal.  And betrayal of trust is exactly what it was.  And now she is expected to still accept Edward as head of the household and his decision to date Bella.  Edward shows no real remorse and understanding of his betrayal of Rose and is arrogant enough to think that he should just be able to go about business no matter the cost.  I do not feel it is a realistic portrayal or does justice to Rose to have her just say okay and 5 minutes of explaining her hurt. Her marriage to Edward and relationship to Alice has been severely damaged and the story should reflect that.  She should have second thoughts on being in this relationship and whether it is truly healthy for her.  Her hurt and lack of trust in Edward should be shown and explored.  The very foundation for which this unique and complicated relationship(s) exist has been shattered and to ignore it is unjust to Rose.  I understand that she comes across as moody and bitchy but that is no excuse to dismiss the hurt and betrayal caused her.  Edward needs to be held accountable and should see that his actions have damaged his relationship with Rose and maybe he might just lose her.  I, for one, am of the opinion that she may be better off without him. 

Yes Bella was foolish to leave her father and go with Carlisle.  No, we can't forgive Carlisle.  She needs to be done with them all and all of their deception.  As Edward said they can never redeem their actions against him.  It would serve him right to never know about his child and be able to be a part of its life.

I am enjoying your story so far.  I really hope that for once, Bella DOES NOT forgive and forget so easily.  She should limit Edward's time with Mason and completely shut him out regarding herself.  His family should not be allowed any contact with Mason at all - not for many years at least.  I'm not sure how to see a HEA with this.  I really would like to see Edward suffer watching her move on with another.  i doubt you'll do that though, but Edward should seriously suffer.  Her last email said she was letting them go, so she should stick to it.