Lexi had spent a lot of the time with the body wondering if John felt now how Lee must have felt. Lost, unable to stop what had happened, wondering what came next. If this was it. If this was the best he could do. John wasn't going to suffer the same way if she could help it. If she could stop him feeling as lost as she imagined Lee would have felt then dammit she'd do all she could to help him through this. And she knew she wouldn't be alone in doing it either. Of course she wouldn't. The people here did care, no matter what people like the bastard that had done this thought. And he'd killed him. He'd gotten that, for whatever good revenge ever did anyone. Poor guy. It had to mess anyone up. Lexi had lost friends of course but never someone this close. Never someone that close to her heart. But she had been lost.
When John got there Lexi's heart broke. He looked like hell, still blood splattered, still broken. But he still went to check a pulse before seeming to accept it and pulling the body close to him. Lexi had done what she could, wiped some of the blood away, cleaned him up a bit. And moved him out of the way of people because they didn't need that on top of everything else that Moriarty had done to them.
She didn't say anything for a long while because what could she say, sorry his friend was dead, sorry he hadn't been there. It was all so trite.
But finally she needed to. He was just sitting there. Hurting, not even crying but just staring. She needed to do something and all she could do was reach out, take his hand in hers, the one not clutching at his friend and spoke softly. "John, we need to move him. Its not right him being here, we need to get him back to the complex at least. Can you do that with me?"