This missing scene begins after the end of The Sacrifice
Elena was talking to Damon. They were on her porch. She wasn't calm, not even close, but she knew he would not let her go back to the tomb, to Stefan.
"We can't leave him there, Damon." She was almost pleading. "We have to get him out."
"Do you know why he's there, Elena?" Damon asked.
Elena had to close her eyes and shake her head. "Jeremy. So stupid."
"I agree. He never should have been there. But you know why Jeremy was there." Damon said.
"The Moonstone." Elena said shaking her head again. "You guys never should have gone after it. I told you I didn't want you to."
"I wasn't there, Elena." Damon said, pulling her eyes to him again. "I was keeping you alive."
Elena scowled. "I didn't want you to do that either."
"No, you wanted to be a sacrificial lamb. Stupid, but I've already told you that."
"I did it to protect the people I love," Elena said, still scowling.
"You did." Damon said, his face hard. "Everyone's into sacrificing themselves. Jeremy did it to get the Moonstone. Stefan did it to get Jeremy out. All of you need to quit trying to kill yourselves and focus on keeping everyone alive."
"No one will be alive when Klaus comes," Elena said bitterly, "not unless I get to him first."
"Why do you think that Elena?" Damon asked angrily. "He needs a lot more than just you to break the curse."
Elena hesitated. She had been so obsessed with getting to him to turn herself in that she hadn't thought about this further. "I would have asked him to leave you guys alone."
"Leave us alone," Damon repeated. "just to find another vampire, werewolf and witch to kill? Would he not still need those and the Moonstone?"
Elena sighed and closed here eyes. Maybe he was right.
"Everyone's still alive, Elena, despite all the self-sacrifice going on. No more. We have the Moonstone, we're going to figure it out."
Elena looked at him, almost desperately. "Stefan is with Katherine. He's not safe in there with her."
Damon tried to calm her, "He's safer with her than anyone else would be. He'll be fine."
Elena wasn't giving up. "We still need to get him out."
"We will. I told him I would find a way."
Elena nodded. "So he knows we're trying."
"He knows. He also knows that you come first. He wants us to work with the Moonstone."
"No!" Elena said sharply. "Not me, not the Moonstone. Stefan. We have to get him out."
Damon spoke softly, trying to calm her. "Elena, you saw Jeremy. You know what he did, what Stefan did. They did it to get the Moonstone. Stefan wants you to be safe, then we can work on him."
"I'm safe." Elena claimed almost bitterly. "Elijah wouldn't even take me."
"That was weird," Damon acknowledged. "But safe today, dead tomorrow. It happens all the time."
"I don't know what to do" Elena said, desperate again. "I can't even turn myself in. I can't do anything."
Damon reached around Elena to hug her, she let him.
"Go to bed. I'll be out here. Nothing will bother you tonight."
Elena held on to his hug for a few seconds, actually feeling comforted. The she pulled herself away and turned to enter her home.
"Nothing from the outside will bother me," she acknowledged. "Just my thoughts."