Of course going through an emotion time can evoke memories and that's what I believe happened and it seems Billy does as well as he said as much.
Billy talked pretty openly in Rev.
But I was smart enough to realise that it was just my mind and emotional turmoil playing tricks on me.
However, that event did make me appreciate why some people choose to believe in an afterlife. It would be great to think Mum's there waiting for me, but .... naaaaaah! The whole ghost and afterlife thing is just a nice idea to make us feel better about people whom we love falling off the twig, and this mortal existence here on earth. Once you're dead, you're dead.
Getlo - cute'n'cuddly
Hearing your mom's voice for a few weeks afterward is quite common Getlo and I hope you're wrong, I hope you do see her again.