He is highly displeased with his siblings when he discovers why his sister is screaming. Kol turned her hair magenta. Centuries of living, and his siblings still act like children. He wants a drink or two, but he sees Caroline holding Klaus's hand, they're both passed out on the couch as he goes to find them. On closer inspection, he realizes the hybrid mostly likely let the baby vampire into his head. Maybe he is more serious about her that Elijah had previously thought. Elijah checks his phone and repeats what the time is a few times, and tells them he'll be in Elena's head and explains the screaming and shouting of Kol and Rebekah. And after a few seconds of listening, he adds that any other chaotic noises are most likely them as well.
He returns to Elena's room, and has to block out the noises of destruction a few rooms away. Rebekah's hair is fixable. She's just angry. He'll do damage control with his siblings later, if he doesn't let them war at each other, it'll happen later.
He has to slow his breathing, and focus for a few minutes before he can return to Elena's mind.