About king's relationship with Ophelia, you can find your answer in Rod route itself. SPOILER: Delora said that king married Lucette's mother, because she threaten him that she will kill Ophelia. So they was in love from very beging, when Rod do not even exist. And because it is something which we know from Delora (or Parfait? im sure it was one of them) this is not a curse-related knowledge but truth.
I have not play Waltz and Fritz routes yet, but im sorry for Annice, Lucette never treat her really good, she was mean or not-so-bad for her but never truly kind (on this 3 routes so far), so yeah, definitivly she deserve more :D