Corrupted Hearts ? Isaac Lahey x Reader

2

"You know her?" Scott asked Derek. 

"She's my sister, my younger sister" Derek replied rushed and very confused. 

"What the hell is she doing here?" The beta asked now puzzled as well. 

"Like I have a clue, I thought she was dead" Derek replied before Boyd ran at them.

"Cora, Boyd STOP!!" Y/n shouted at them but they didn't listen, no one seems to even notice her.

A roar shook the vault for a moment and the red eyes of an Alpha shone through the mist to the vault door. The werewolves turned to see Y/n panting with desperation on her face. "Cora please, don't hurt our brother" Y/n spoke again, with a pleading tone and expression, but Cora ignored her throwing another punch at Derek. 

"Y/n?" Derek pants out, confused and avoid another punch form his sister.

Y/n doesn't reply she just trys to step in, to help, but gets thrown back by the mountain ash. 

"Derek, who the hell is she?" Scott asks avoiding Boyd who ran at him.

"Another sister of mine" He answered throwing Cora to the side. 

~First Person~

The brunette girl Lydia was talking with came running over to the barrier, looking down at the mountain ash and both me and my brother shouted at the same time "No don't break the seal!!"

She looks up at him then to his beta before shouting "Boyd!" And breaking it anyway. 

I heaved a sigh getting up and trying to stop the betas but they pushed me to the side again and dislocated my arm. Great just great. Derek and his beta came running out, Derek taking hold of this girl,

"What were you thinking!?" He shouted at her and the beta intervened, 

"She saved our lives, Derek" 

"She set monsters loose," I said popping my arm back into the place. 

"Yeah, do you have any idea what you set free" Derek agreed, helping me up. 

"You wanna blame me! I'm not the one turning teenagers into killers" she replied, Derek scoffed. 

"No that's just the rest of your family" He said and she seemed to look regretful for a moment. 

"I made mistakes, Gerard was not my fault" 

"Then what about your mother" He deadpanned back. 

She looked confused, but I decided it wasn't worth listening to, so I looked to the cuts on my arms watching as they slowly healed again. 

Once they had finished talking I turned to Derek "Are you ok?" I asked. 

He looked at me shocked "Am I ok? I just found out my two younger sisters are alive" He scoffed with disbelief, I looked down. 

"I'm sorry, I-i" I didn't know what to say but he enveloped me into a hug, 

"I'm just glad you're safe" Derek explained. 

"I have to go back to the pack, I can't leave the twins by themselves" I explained as I pulled away. Derek looked confused and angry, "You have to find Boyd and Cora, call me when they are safe" I explained giving him a piece of paper with my number on and went to leave but he grabbed my wrist. 

"I just got you back you can't go again, and not to them" he expressed as a big brother should. I smiled proud of the person he had become, 

"It's no different than when we were kids, he saved my life, my debt hasn't been paid yet" I smiled before pulling my arm away and running out of the building, following the scent of the pack. 

**Flash Back (Talia's point of view)**

I ran with my young toddler in my arms, I called a meeting with the Alphas of the local packs. I arrived at the holding place the others already there, waiting and anticipating what news I had. I set my daughter down on a table, her H/c hair framing her sleeping face, as she groaned slightly. 

"Talia, what's wrong? Why is Y/n here?" Kali asked and I lifted my gaze from Y/n to the Alphas, 

"She's like us," I said in disbelief. 

Ennis chuckled "Yeah that happens Talia, you know Werewolf babies aren't uncommon" 

I realised how vague I was being "No, no she's not just a werewolf she's an Alpha" I explained looking down at her again, I was so stressed, so scared for her. 

Deucalion stepped forward placing a hand on my shoulder "How do you know?" He asked as it's rare to see the werewolf eyes of a child so young. 

I took a deep breath before going to my daughter "Hey, Y/n you gotta wake up" I said and she stirred opening her E/c eyes before sitting up. 

"Mommy, what's wrong?" She asked looking up at me. 

"Nothing, nothing. But you wanna show me your scary face" I said enthusiastically and she smiled before nodding. Y/n closed her eyes and everyone in the room went quiet the tension filled with a nervous smell, the little girl opened them again showing red iris' instead of her natural ones. Everyone gasped and the little girl shied away from the noise, eyes instantly turning back, and she scrambed to my arms. I scooped her up and she fell asleep again, I sighed. 

"Listen to her heart it's barely beating even for a young one" Kali spoke up again and I nodded, 

"The power it's killing her" I explained. 

"What do we do we can't let her die" Ennis explained and I nodded again. 

"Even I don't know" I felt a tear slip from my eye. 

"Someone must take it, at least some of it" Deucalion spoke reaching his hand to Y/n's little one, taking it. 

"No, I can't let you she's my daughter I will," I said knowing how dangerous the procedure can be for the person who takes it. 

"Nonsense, she's apart of all our packs like every one of your children. I've practiced this skill before it safer if I do it, you're too important Talia" He explained before taking a deep breath in and a purple colour covered his veins as he took some of the power.

I listened to my little girl's heart as it grow stronger, her breathing became deeper and her completion brightened.

"There," He spoke before taking a seat. 

A/N; So this chapter ended up writing itself so I hope you enjoyed it, personally I'm loving reader's background story. 

Disclaimer; I do NOT own Teen Wolf or any of their characters which I write in this, I own (Y/N) and that's it, Please don't sue I like not being in jail. This is for entertainment and I get no money from it.