Nice scene with Melanie and Catherine. Melanie sees herself as having no choices, and she's right: ever since she made the uninformed, childish choice to go into the Room to help her father, her life has been ruled by her "attacks". Catherine says we always have choices, and indeed Catherine does have choices - but she sure has chosen badly!
I've never been married, so I don't know. Is it true that, as we see in fiction, marriage reveals people's true colors? It was howlingly wrong of Morgan to wait until after the wedding to tell Catherine that he didn't want children, but he's making it clear that he thinks it's his right to dictate to his wife in every detail. Catherine did have some idea, however, of his dictatorial nature before they married. And she probably liked it - then.
Morgan was cruel in burning Bramwell's letters, but Catherine should never have left that one on the mantelpiece.
Yes, another bad choice by Catherine.
I liked the use of the word "burning" in the final scene, going from the dream to real life.