Ch 1:
Note: I know Joss whedon owns these characters nor do I know Alyson Hannigan, who played WIllow on the show. Spoilers to Buffy 3 x 09 with mild references to 3 x 16
Synopsis: How did WIllow become such a powerful vampire in the Wishverse in the first place?
Sunnydale, 1997:
Willow and Xander were in the eleventh grade and Sunnydale was becoming increasingly more dangerous every day. Giles had a growing suspicion of the Master's power. He knew Buffy was the slayer, but she lived in Cleveland instead. There, she fought a mad warlock who summoned zombies and had nearly killed her. Willow and Xander were walking home together as the sun was setting unnaturally early.
Xander: "Hey Will, how was biology class today?
Willow: "Weird", we had to dissect frogs, but they were full of evil-y magic that killed a student"
Xander: "That's tough, I am discovering my math class is getting smaller and my teacher is a man who only teaches in a room with no windows."
Willow: "That sounds horribly creepy. I have a suspicion he might be vampire."
Xander: "I would not be surprised; his favorite Sesame Street character is Count Von Count."
Willow: "Well, that spells duh."
Cut to Willow investigating the mysterious teacher
Willow, who was carrying holy water, a cross, and a stake, told herself that this teacher is probably a vampire. Her plan was to follow him. The math teacher walked into a warehouse. She saw he worked for the Master, an elderly, bald, bat-like vampire.
Willow: (sarcastically) "What a surprise, I could never have guessed"
The Master killed the math teacher by dusting because he saw him worthless, he then spoke to his minion vampires.
Master(to minions): "I have some new prey. I can sense her combination of hatred, passion, and intelligence."
The Master then ordered his minions grab Willow by her limbs and chain her down to a table on her stomach. Willow was screaming while this happened, but her struggles were futile. The vampires stripped her to her underwear and had a troll they captured carry her clothes to the incinerator because they had anti-vampire stuff in them. Meanwhile one of the vampires whipped Willow with a lash for no reason other than for his own amusement. After the session, Willow's back was bruised and bleeding.
The Master: "it is time"
The Master bit Willow and she bit him back in fear of being tortured again.
Willow's human body and soul were drained of blood and now she was dead.
A few hours later, at midnight, Willow woke up, now turned. Any sense of her humanity, including her anxiety, were gone. Willow was very hungry and walked into The Bronze, still in her underwear. The Master applauded her as soon as she walked out the door.
She then found her first victim, a Razorback's cheerleader, who was wearing a black dress to the party.
Willow(in a moaning tone): "Why are you so weak", while kicking the cheerleader.
The cheerleader tried fleeing in tears, but Willow ran after her, grabbed her, broke her neck and then bit into it to drink, killing her.
Willow then took her dress from her and then marched triumphantly back to the Master so he would reward her.
End of Ch 1