The boys pulled over next to Camaro and Eri got out with a grim look.

"Alright what's going on?" Dean asked, swinging the Impala's door shut.

"You're not going to like it," Eri looked down, "I have to tell you something important about me.

"Oh c'mon," Dean rolled his eyes, "Can't be as bad as being vessels for dicks with wings."

"Well..." She looked to Sam.

He nodded in encouragement and she took a big breath. She told Dean everything. The normal life she had before, the crash and her sister making a deal. How she had met a hunter and she ran off to find a crossroads demon. She explained how bad it went, how the hunter died.

"I have demon powers Dean," She explained, "Like Sam used to."

"Are you insane?" Dean asked in shocked, "Sam you knew!"

"I've been helping her Dean," He interjected, "I've been teaching her everything I know."

"What about demon blood?"

"She hasn't had any and won't ever have any!" Sam said frantically.

"How do you know?" He demanded.

"I've been checking her! Watching her"

"Sam's right," Eri said, "I would never go dark! I'm not crazy!"

"You already are!" Dean argued.

"Excuse me?" She asked angrily, "I'm using this to help people! I'm using this curse for the greater good!"

"Ya," Dean rolled his eyes, "That's exactly what Sam said before he went dark!"

"This is different!" Sam pleaded, "I know what's going on! I know how it can go bad! We're learning from that!"

"She won't!" Dean pointed to Eri, "What do you think is going to happen when she finds Teresa possessed? She'll want to save her like you used to do! She'll drink that evil, suck it down to save her friend! She has no idea of the consequences!"

"I won't!" Eri shouted, stalking to Dean, her eyes flashing dangerously.

"Really?" Dean asked, raising an eyebrow.

"Really," She nodded, "I knew the consequences when I came back from the dead, when that hunter saved me and sacrificed herself! I understood the consequences when I killed that demon! When Teresa found me, we swore to each other that we would do everything in our power to protect the people from Hell on Earth! Even if it meant sacrificing ourselves! I am prepared for that consequence! I'm not going to go dark!"

Sam watched in fear as Dean and Eri traded vicious cold glares. He could see both sides, but had to make a stand. he stepped between them, reminding why they were even on the road.

"Look, powers or not, going dark or not we need to stay focused. Charon is out there, him and his minions have been tearing towns apart for weeks! We need to stop him tonight. Save Teresa. The right way with an exorcism. If she's even truly possessed. But the goal is the same weather Eri has powers or not. Shoot the damn reaper with the arrow. In the heart so he can be banished for a few centuries and his reign of terror can be stopped."

Eri broke away from her eye contact first shaking her head.

"Fine, but don't be surprised if things get messy."

"Oh hun," Dean blinked slowly, "Things already are."

The two classics rolled back on the freeway to continue the last mile and a half stretch.

It was silent in the Impala, even Guns N Roses had been turned off. Sam looked sadly at Dean who simply glared at the road.

"How long?" Dean demanded.

"Since we got back from the first fight with the Charonmites." Sam said, already knowing what Dean was asking.

"Why didn't you tell me?" He demanded.

"It wasn't my secret to tell," Sam said, looking out the window.

"That's a load of crap and you know it!" Dean shouted, "It's because you know how'd I react isn't it?"

"Well Dean," Sam snapped back, "You did kill Amy and she was just a kitsune! What was I supposed to think?"

"I've changed!" Dean roared.

"Ya," Sam nodded, "You made friends with a vampire and killed him!"

"To save your ass!" Dean countered.

"Seriously?" Sam asked, "I didn't ask to be saved! Eri isn't asking either! She has a disease Dean! The same thing I had!"

"And look how you turned out!" Dean pointed out angrily.

"I didn't know!" Sam protested, "There was nothing on powers of abilities! No one had demon blood fed to them Dean! You don't know what it's like! To be a monster, to have something inside you that you can't control!"

"Really?" Dean asked, "I was in Hell for 40 years! I was in Purgatory for a year! I think I have a pretty good idea what it's like to be cursed!"

"It's not the same and you know it!" Sam shouted, "You be a monster Dean, try to control it and see how it comes out!"

"So what now?" Dean demanded, "Let her go off with powers of a demon?"

"Help her! Control it, make it into something good. Eri is an incredible hunter. One of the best we've seen. It's my fault that she's here though. I released Lucifer, demons caused her accident. She won't stop being a hunter, just like us. But we can make that curse into something good for the world."

"This is not what her sister sacrificed herself for!" Dean shouted, "She saved Eri, just like I did! It's what we do!"

"We?" Sam asked.

"The older siblings," Dean explained, "We protect you, the little siblings We sacrifice ourselves for you. It's our job, hunting or not."

"So we can't do anything?" Sam asked, "Me? Eri? We can't try and do right for you?"

"No," Dean shook his head, "You keep your head down and don't use weird demon powers!"

Silence waited in the car as the brothers contemplated each other's viewpoint.

"I don't think we can," Sam said softly, "I couldn't. It's what we, the younger sibling, does. We try to make you proud. I screwed up. I let Lucifer loose, I caused war and death and destruction. I trusted Ruby. I left you in Purgatory. I messed up. But with what I know now, I can help Eri not make the same mistakes I did."

Another beat of silence filled the car as the brothers stared out onto the dark roadside.

"So that's what this is?" Dean asked softly, "Some sort of redemption because you think you let me down?"

"Because I did let you down," Sam nodded, "And I caused Eri to be pulled into this fight. Her, Teresa and who knows how many others."

The brothers looked at each other sadly as they pulled off the highway and into a driveway where a secluded beach house stood.

"I don't care what anyone says," Dean said, "You have never let me down. You come when I need you, every time. Powers or not, that's what's important. Loyalty. That trumps everything."

"You honestly think that?" Sam asked, climbing out of the car, "After everything?"

"I do," Dean spoke absolutely, "And after all this is over, we are going to have a very long talk about what to do next."

"She won't go dark," Sam insisted

"Not if we have anything to say about it."

The pulled out their salt rounds, shot guns and Ruby's knife from the trunk. They each held a flask of holy water and loaded the guns. They nodded to each other and then Eri who also had prepared herself. She had a shot gun, a silver cord around her waist and a dagger strapped to her thigh. She slung the quiver over her shoulder and gripped the bow in her left hand.

"Alright boys," She nodded, all business, ""Let's go kill a reaper."