Okay so doppelgangers are created when someone becomes immortal and so a shadowself is created who dies for them. Does that mean that every vampire has a doppelganger? I know that they can all be killed and everything but they are still considered immortal beings? So does that mean that they get doppelgangers too? And even if they don't get them due to the fact that they can still be killed, what about the original family? They can't be killed apart from the white oak stake, which is pretty much non-existant now, does that mean that they have doppelgangers due to the fact that they can't die?