I think we are still missing some more details of the story. Something that bothered me about last night’s episode was that SW seemed to really LOVE the idea of getting a new mother and she really seemed to LOVE Regina. She seemed very trusting and open of her, she seemed to really want her to be happy. When Regina was in her wedding dress she told her that she “was the fairest of them all.”
Fast forward to the “Fruit of the Poisonous Tree.” SW seemed almost oblivious of Regina in that episode. The King basically ignored Regina and said that he couldn’t love her the way he should. The King talked about how he loved his FIRST wife at his birthday party and told SW that SHE “was the fairest of them all” just like her mother used to be – right in front of Regina and Snow didn’t seem to think that was odd, in fact she was flattered. I DID feel sorry for Regina in that episode at that part. I’m a second wife and I thought to myself “Wow, that is incredibly inappropriate and hurtful.” It was the KING’S birthday, NOT Snow’s birthday so it wasn’t an appropriate time to be reminiscing about your dead first wife and how much your daughter reminds you of her – especially in front of your second wife. That seemed strange to me after the way Snow carried on with Regina when she was young. It seemed like Snow would have recognized that Regina’s feelings would have been hurt. So it seems like something else must have gone on. I don’t know if Snow told the King that Regina had been in love with Daniel and didn’t actually love him and that’s why he wasn’t able to love her.
At one point Snow told Regina how much Regina was going to love the palace and Cora said “Oh, I know WE will” so it sounds like Cora is moving there too. So maybe it isn’t just this past episode that is the problem. Maybe when (because I think she probably does) Regina kills her mother because she killed Daniel and she inherits her evilness, she then blames Snow for not only Daniel’s death but for the state of her life. Maybe that’s how Snow finds out that Daniel is dead – maybe Snow knows that Regina killed her mother.
Because at the end of the FTL section last night, even after Regina’s voice changed, Regina turned back to her mother and realized that she had staged the whole thing – that Snow’s horse taking off had been because her mother used magic to make it happen. So right now in FTL, she still DOES blame her mother for everything. Once she takes care of her mother then she can turn her vengence toward Snow. But I still think there will be more that happens between Snow and Regina.