Grief is individual. Everyone grieves the 5 stages at their own pace. Your friend's grief is not on a schedule, so you can't really track how often she spends in each of the 5 stages b/c there's no time-table.

Grief is not like a cold, which only lasts 7 to 10 days. Grief can last for years. When my father died, I was 21. I'm 49 now. I still go through the 5 stages occasionally 28 years later. Grief never stops. It just ebbs and flows throughout the years.