Not every pair of three or four is related to the other pairs of three and four...
It's true the evil trio are the three Alices (daughter, sister, mother), and there were previous ones (it's been a while since I played, I forgot if the three of them had 'previous'es or if it was only one who didn't want to any longer and got replaced? Really don't remember...), but Prickett was the original Alice that's at the start of BS1 and that is in the Queensland video. The one the black rabbit/prayermaster betrayed. (Though, she's not the
original original "real life" Alice Liddell, obviously.)
The demonic princesses are their own thing, presumably created by Mary Sue from real people; IIRC, we'll get a spin-off for them before BS3.
The succubi, too, are their own thing. Although I don't remember the distinction between BS1 Victoria and BS2, I do know BS1 Victoria was Mary Sue's attempt to recreate a fitting Victoria for her garden. For some reason, which I don't remember, I didn't just use the real one. It does make things somewhat sad because it means BS1 Victoria is really gone, but that's just the way it is...