Can a person be caught between worlds?

Is it wrong to be able to talk to someone who has been long gone?
Is it even more wrong to actually believe that you see and hear this person?
The conversations you hold are crystal clear, as if you tried to reach out and touch them, you would feel more than air.
Your dreams are plagued with their image, and sleep is riddled with nightmares of their death.
Do you ask for redemption? Question your sanity?
Or come to the conclusion that your redemption is fucked and your sanity was deemed so even longer before?

And which person is the one stuck between worlds?...exactly?