Does anyone else think Serena may help the dawnguard. I dont know why but because bethesda just shows me her back I assume shes a good person.
Why the hell would she help them? Sure, she must be sacrificed. But not joining with Harkon does not mean she is going to join the Dawnguard. It wouldn't make sense, and it would be ridiculous. Dawnguard are a bunch of fanatics that want to kill off vampires. Harkon wants to blot out the sun because of the prophecy that says ALL vampires will be eradicated by the incoming doom of sorts. You think he came out of nowhere and said "Let us block the sun because we want to feed on people for the hell of it in a darkened world?"
No. Vampires want to survive and they sure as hell are going to try to. And the Dawnguard will try to stop them. I believe she is a good person even if she doesn't try to help out the tyrannical enemy that is the Dawnguard. If your doom was coming, wouldn't you try to find a way to survive and stop it?
Its like saying cows are going to try to stop humans from devouring them by accelerating the rate of our apocalypse. Would you join the cows and shake hands? "Come, cattle, let us be friends and live together peacefully."