She's had to spend four hours of her life convincing Bonnie that Elena is safe. She actually calls him, when Bonnie worries that Klaus could be harming her. She doesn't mention that she's thought Klaus wouldn't hurt her best friend again for her sake. She doesn't know what she feels towards him, but it reminds her of a dry cake mix. There's things she can pick out and feel, but she can't separate any of the feelings out to see what they are. She knows that there's a little bit of hate in there, like she knows there's flour in her mother's favorite chocolate cake mix. But just like cake mix, there are other things in her feelings for him that she can't put a name to. Maybe she'll google the hard to pronounce names when she's in the same state he is.
Elijah answers, his tone is polite. Caroline takes the phone from Bonnie and puts it on speakerphone. She asks how Elena's doing and he tells her that she has an IV for blood, and that he was able to talk to her. He tells her that Elena asked him to teach Caroline when she arrived. Bonnie looks at her, a little confused. Caroline tells her that only Elena knew she couldn't enter dreams. Neither of the Salvatores had taught her, and Elena had apologized that she couldn't teach her either. She made a better student on the vampire stuff. Bonnie looks at her with interest, and Elijah told them that she was okay. He tells them he has to go, and Caroline says goodbye and hangs up quickly.
It's another few hours convincing Bonnie that she wants to spend decades with Elena, while she's comatose.
They can talk to her, Caroline points out. Bonnie feels the sting of being excluded. She's not a vampire. She decides then that she will find a spell that will let her talk to Elena. After a late dinner, Bonnie tells Caroline that she should go, New Orleans is waiting. She shakes her head, and says it can wait a little longer. They're going different ways after this, she wants the extra few hours. She also wants to tell her mom goodbye, at the station whenever they get up.
So they sit in Caroline's room and talk and watch stupid movies, it's fragile. They don't know when they can do this again. By the seconds movie, Bonnie is reminded that Caroline has the most extensive collection of bad romance movies in the world. Or at least, it feels like it. They stay up too late, later than they had planned. They're giggling and crying to a Disney movie and Caroline tells Bonnie she loves her. She wants her to go out there and explore the world and have fun. Bonnie tells her that she could come with her, but Caroline shakes her head. She means, Bonnie could find a coven. Maybe even someone to settle down with. Bonnie doesn't want to hear that, so she doesn't let Caroline finish the sentence. They both fall asleep before the end of the movie, with the happy resolution.