It's just noises right now, noises and broken attempts at words. Her shooshing only gets louder, trying to pacify him in the only way she can. He's not a harm to anyone but himself right now but she knows the harm he can inflict on his own body and mind when he feels low.

"Oh--Oh Psii, I missed you too," whispered Disciple, rubbing at tears on her cheeks with rough palms, "You have nothing to be sorry for. Nothing in the world. I know you don't think I'm real, but I am, I am. I purromise."