Bleeding Through is definitely an interesting and ominous title, but better than “bleeding out”. Bleed could obvious refer to blood seeping out of a covered wound, but also perhaps to magical effects spilling out unintentionally from one spell to another, or perhaps even an identity cursed away bleeding through the curse that covered it up ?
I don’t think this is a “Cora” centric at all. Why concentrate on the point of view of a character who is dead? I do think she will have a huge role to play as they aren’t going to get Rose on for a quick cameo (then again, they did exactly that with Mirror/Esposito so who knows?). My guess? It is going to be a Rumple centric in the past, showing a deal he made that probably relates to the WWW and Regina’s special link, whether that is sisters, or cousins, or just two magical kids with a curse that swapped one’s malady for the other’s cure. I don’t think it would be far enough back in time to count it as a “young Regina” episode unless they get an actress for younger kid Regina as they did with Bailee for Snow. So that is why I am guessing Rumple will play a big role.
Extra characters exist to tell the story of the main characters in the story, whether they are main supporting or main leading characters. When we first saw young Cora, we had older Cora as a main vaillain and therefore, a main character (but guest star). Now she isn’t an active character so I don’t think it would make sense to feature her the way Miller’s Daughter did.
If WWW is Cora’s sister it feels very ret-conny to me. She could be Eva’s sister though, and she could be present at an event where Leo, Cora and Eva meet. Perhaps Leo was to marry WWW and he fell for Eva instead and WWW and Cora teamed up for revenge? Maybe WWW was Cora’s teacher on the side after Rumple?
So long story short–either we’ll see Rumple in these flashbacks, or WWW, but I think Leo, Cora and Eva are supporting characters in those scenes.
Though I do expect there to be some strange reveal here either between WWW and Snow or Regina but not both (so no Leo and Cora!!!).
Have they started to film this?
“If I had a world of my own, everything would be nonsense. Nothing would be what it is, because everything would be what it isn't. And contrary wise, what is, it wouldn't be. And what it wouldn't be, it would. You see?” -- Lewis Carroll, Alice's Adventures in Wonderland & Through the Looking-Glass