You're still not understanding what I'm saying, I think we've been over this on discord. They're half sisters, yes. But they share more DNA in common than you would expect, because their mothers are twins, and they were conceived on the same day. I don't think repeating that again will help, but I dunno what to try.
I mean, I have a half sibling. They don't look much like me at all because their mother was not my mother, or like my mother genetically.
I'm not trying to involve myself in this argument, I'm just adding context.