Hmmm, yes. Now I recall an update of yours where Jill Smith was watching the ghost of P.T. move around the house. It's probably more of a "feeling their presence", I would say.

The relationship score makes sense. And based on that, Ripp probably wouldn't "see" either of his parents, really. There is some weirdness about the Lyla in the graveyard (like how the Grunts have no memory of her death), and he had a pretty low score with his father at the time of his death.