Last night, I kept getting woken up by footsteps in my grandma's bedroom (even though she's in the hospital and no one else is sleeping in there). The footsteps sounded like someone was pacing in circles... throughout the room and in the hallway. I got woken up at 1am and 3am, and some time shortly thereafter.

It didn't seem like our pipes were making banging or tapping noises, and I couldn't distinguish if it all was a dream or not, but I woke up around the time of the footsteps... and it seemed like the footsteps were real. Yet, at one point, I walked into the bathroom and gave my grandma a hug even though I couldn't feel the hug. And she vanished into thin air. I couldn't find her.

Would you say this is just a vivid dream or a hallucination?