Beth can be the one who tries to soothe his ruffled feathers? Be like his little Jiminy Cricket?
I think they'd know each other really well. He's been with Ghost Corps since '00. I see she's been there since '08. They'd have figured out each other's ticks, and the like. She'd fully be aware that he has voices in his head that talk to him, and will have full blown conversations with them/himself.