When you have loss someone that you love, time appears to stand still. The world moves at a slower pace and the pain is great. What happens when it is not your grief that you have to manage? Time moves at its normal pace but for the person in your life there is a disconnect. Managing your own personal grief is jut that, it's personal. Managing how you handle someone's else grief is more difficult.
Grief changes a person. The person that you know has changed and how do you cope with this new person. They can be moody, difficult, curt, weepy, and on some days just plain old rude. It is difficult dealing with this individual because you can't look inside of them and fix their pain. Nor can you know how long their grief will last. When you are in normal time someone else's grief can seem like a long time. For the person who is grieving time is not what is important. there is no magic time for grief, it can take months and sometimes years for a person to manage their grief.