She has to talk about serious things with Elijah, but when she texts him to come over in his pajamas. She's already in hers and he's in her room a few minutes later, she's silent. She moves forward, and hugs him. She values her own family so highly-she can't imagine how he must feel. Her face is in his neck, she wants to be as comforting as possible. She knows he's had years to adjust to being without his siblings, but she wants to reassure him. She's going to help him in any way possible, to find them.
He doesn't understand it until she whispers that she's going to help him get his family back. He just pulls her even closer.
She's trying to remind him that he doesn't have to do this alone anymore. Having time with her family reminded her that Elijah didn't have that. Someday, she thinks. Someday, she'll meet them and she will see him smile more.