why did sam let dean turn into a vampire

After the great war between humans and beasts, both sides agreed to let the half-beasts govern the world.Every hundred years, a union between humans and beasts would be arranged. The first half-beast child of the generation would be the next ruler of the Human-Beast Alliance.In my past life, I chose to marry the eldest son of the wolf clan, renowned for his unwavering devotion. I was the first to bear him a child—a rare half-beast white wolf.Our son was named the next ruler of the Human-Beast Alliance, and my husband, by extension, rose to immense power.My younger sister, who had chosen to marry into the fox clan out of vain admiration for their beauty, was not so fortunate. The fox clan's heir, a notorious philanderer, eventually contracted a disease and lost his ability to father children.Jealous and resentful, my sister set a fire that burned both me and my young white wolf son alive.When I opened my eyes again, it was the very day of the human-beast mating ceremony. This time, my sister was quicker—she climbed into the wolf clan heir Jacob's bed before I had the chance.I knew then: she had been reborn too.But what she didn't know… was that Jacob's nature was cruel and violent. He worshiped bloodshed, not love. And he was anything but a worthy mate.

After the great war between humans and beasts, both sides agreed to let the half-beasts govern the world. Every hundred years, a union between humans and beasts would be arranged. The first half-beast child of the generation would be the next ruler of the Human-Beast Alliance. In my past life, I chose to marry the eldest son of the wolf clan, renowned for his unwavering devotion. I was the first to bear him a child—a rare half-beast white wolf. Our son was named the next ruler of the Human-Beast Alliance, and my husband, by extension, rose to immense power. My younger sister, who had chosen to marry into the fox clan out of vain admiration for their beauty, was not so fortunate. The fox clan's heir, a notorious philanderer, eventually contracted a disease and lost his ability to father children. Jealous and resentful, my sister set a fire that burned both me and my young white wolf son alive. When I opened my eyes again, it was the very day of the human-beast mating ceremony. This time, my sister was quicker—she climbed into the wolf clan heir Jacob's bed before I had the chance. I knew then: she had been reborn too. But what she didn't know… was that Jacob's nature was cruel and violent. He worshiped bloodshed, not love. And he was anything but a worthy mate.

I grew up abroad. My mother feared I might marry a foreign man, so she arranged an engagement for me with a talented and handsome man in Flodon. She insisted that I return home to get engaged. I came back and started shopping for an engagement dress at a luxury boutique. I selected an off-white strapless gown and decided to try it on. Suddenly, a woman nearby glanced at the dress in my hand and told the saleswoman, “That’s a unique design. Let me try it.” The saleswoman immediately yanked it out of my hands. I protested indignantly, “Excuse me, I was here first. Don’t you understand the principle of ‘first come, first served’? Or do you just not care about common decency?” The woman scoffed and retorted, “This dress costs $188,000. Do you really think a broke nobody like you can even afford it? “I’m Lucas Goodwin’s sister in all but blood. He’s the chairman of Goodwin’s Group. In Flodon, the Goodwin family sets the rules.” What a coincidence! Lucas Goodwin was my fiance! I immediately called him and said, “Hey, your ‘sister in all but blood’ just stole my engagement dress. Do something about it.”

On my eighteenth birthday, Alpha called me up in front of the whole pack and told me to choose—one of his sons as my mate. Whichever I chose? He'd be the next Alpha. I didn't flinch. I picked Cayce, his eldest. The room went dead silent. Everyone knew I used to be stupidly in love with Kain, the younger one. I'd confessed at every pack dance. Took a silver dagger for him once. Cayce? Coldest, meanest wolf we had. Total menace. No one got close. But they didn't know the truth. In my last life, I was bonded to Kain. On the day of our Bonding Ceremony, he slept with Lena, my cousin. My mom lost it. Shipped Lena off to Duskwolf Pack to get bonded to their Beta. Kain? He blamed me. Paraded in she-wolves with Lena's same ice-blue eyes. When he found out I was carrying his pup, he made sure I saw him with every one of them. It was torture. When labor hit, he locked me in the dungeon. Blocked everyone out. My pup got crushed. I died hating him. Maybe the Moon Goddess felt sorry for me—she gave me a second shot. I came back. This time? I let Kain keep Lena. Didn't think he would ever regret it.

I was eight months pregnant and had just gone into labor, but my Alpha mate, Damien, locked me in a silver cage in the basement to delay my labor. When I cried out for help, he just told me to wait. Because his late brother's mate, Victoria, was also giving birth that day. The Pack Seer had foretold that only the firstborn pup would be blessed by the Moon Goddess and become the future Alpha. "The title belongs to Victoria's child," he said. "She lost Marcus. She has nothing. You already have all my love, Elena. The silver cage will make sure you deliver after her." The contractions were torture. I begged him to take me to the clinic. He grabbed my chin and forced me to look at him. "Stop pretending. I should've known you never loved me. All you've ever cared about is wealth and status!" "To force your labor early, just to steal what belongs to my nephew… You're truly wicked." Pale and trembling, I whispered: "The pup is coming, I can't stop it. Please, I'll make a blood oath. I don't care about the inheritance. I only love you!" He scoffed."If you loved me, you wouldn’t have forced Victoria into that contract to give up her pup’s birthright. I'll come back for you after she delivers. After all, that's my pup in there, too." He stood guard outside Victoria's delivery room. Only after he saw the newborn pup in her arms did he remember me. He ordered his Beta to release me. But the Beta's voice trembled. "Luna… and the pup… they're dead." And in that moment, Damien went feral.