After the brothers told her what they needed in order to kill Lucifer she felt uneasy. Tying the feather onto her necklace that she had no idea where it came from she contemplated what to tell Lucifer. She wanted to say yes but her morals told her that wasn't a good idea. They had been on and off the road for days getting everything they needed and she knew she was losing time.
When they stopped off at their hotel and got to their room she heard a flutter of wings and thought Lucifer was either being stupid or planning an attack, but when she turned around she saw someone she would never expect. "Hey Cas, you have the archangel blade?" Sam asked. "I do, here" The man Cas handed the brothers a weird looking dagger and then turned to Eva. "Where did you get that necklace, girl?" I stepped back when he tried getting closer. "I don't know, I found it around the site where I crashed anand thought it was cute so I took it."
"That's no mere trinket, that's lucifer's Amulet. He's marked you. Get rid of it before he finds us and kills us all." Eva ran to the bathroom. Lucifer if you can hear me there's some guy named Cas here saying you marked me and this is your Amulet. They're planning on killing you Lucy! Please come get me before they start suspecting something! Eva hoped that was enough for Lucifer to come get her. She waited for what seemed like an eternity and finally she heard SAY YES OUT LOUD AND I WILL."Yes, Lucifer. Yes!" Eva said it too loud and she heard Dean banging on the door. "Eva what did you do?!" As they all barged through the door Eva felt a hand on her shoulder. "If you boys so much as lay a finger on this gorgeous woman I will end you." Eva was shoved behind Lucifer. "Brother she was meant to die, you can't play father." Cas said. "Our father Isn't the only one who can decide the fate of others. Ever since I saw her I knew she was perfect for me and I'll be damned if any of you take her from me." Lucifer chuckled.
"What did you say yes to, Eva?" Sam looked at her with sadness in his eyes. "She's mine, Sammy. She's going to spend eternity with me." Lucifer's smile grew. "Brother you can't do what I think you're planning on doing. She was meant to die pure if you do that she will never pass into the next life to reside beside our father!" Cas stepped closer but stopped when Lucifer growled. "What do you think eternity means, 'brother? And I'm not going to force her into anything she doesn't want to do, it's all up to her how long she wants to be with me but if she wishes she can reside next to me in her own thrown in hell"
And with that they zapped into a very old looking house. Lucifer handed Eva a magazine along with a pad and pen. "Write down what you want the house to look like sweetheart and come give me the list when you're done. I have some business to attend to." Hours pass by and Lucifer had made the house exactly how Eva wanted it.