Grandfather's Shadow

I haven't posted an experience since last year, so I decided to post one of my mum's experiences today. I will post more of my own soon. I promise! Anyway, my mother doesn't believe in the paranormal; however, what she saw, she can't explain. At the age of 46, she's still trying to come up with a logical explanation for what happened to her, even though this happened back when she was in her early twenties (I wasn't even a figment of her imagination yet).

My mom is from Portugal, but she moved to Canada when she was 3 years old, and every once in awhile, they would go down to visit. My great-grandfather recently died, so they flew down to go to the funeral. They were staying with some cousins, and they have a cat named Duke, who strangely seems to like my mom more than them (not super important, but it explains some things).

My mom was staying in the guest room, and the night before the funeral she was lying in bed trying to go to sleep when she felt someone or something sit down on the edge of the bed. She figured it was Duke, since he always came to sleep with her whenever she came to visit. She sat up to scoop up Duke, but no one was on the bed or around it. And out of the corner of her eye, she saw a black shadow slip out from beneath the door.

To this day, we still don't know what it was. Maybe it was my great-grandfather saying goodbye one last time or maybe it was something else?

Any type of feedback would be great! Thank you so much for reading/checking out my mom's experience. Maybe we can finally get a better understanding of things!