Gone Too Soon

A young woman wakes up in a white room, she has no idea where she is or how she got there but she's greeted by John Lennon, Freddie Mercury and Sid Vicious. Can they help her realise what happened?

Author Note- I'm not religious so I hope I don't offend anyone with my idea of what the afterlife might be like. I grew up technically Christian so my idea is quite influenced by Heaven - this is still going to be a secular story as much as possible.
I could have chosen any celebrities but these are the three I thought of when I thought which celebrities would I love to meet but obviously will never be able to without time travel.
I don't know their beliefs and any reference I make to their lives or their music belongs to them I've only made up the Character who's POV tells the story.