The Price of Redemption

This is a Dark Willow/Buffy story. Basically, the question is "what price are you willing to pay for your friend's redemption, Buffy?" when Willow goes bad.- Elizabeth {Buffy} has to pay a Horrible price! Warning: there IS nonconsensual in the first chapter- since, at this time, it's Evil Willow! Included is Willow/Buffy abuse! Pretty much DW/B forced sex being the misbehavior.