character questions

I wrote these down for a WIP with a character who dies early on, but turns out to be a really important part of the plot and so I have to build in a lot of backstory.

What is the worst thing that ever happened to her?
What illnesses has she suffered?
Who does she miss most/grieve over?
What surprises her?
Who has betrayed her?
Whom has she betrayed?
What does she have in storage?
Former boyfriends?
What are her biggest secrets?
What is her job? How did she get it?
What did she study at college?
Where di...