I'm so sorry. I lost my mom September of '07 and it's was (and is) so difficult. Her illness was much quicker, by the time we new she was seriously ill she only had a few weeks left.
My company was fantastic. The gave me a week's leave (paid out of my sick time) to fly out there to visit her while she was in hospice (turns out it was for the best, she passed while I was out there) and another 5 days of berevement (per company policy, everyone gets that for the death of a parent), which covered the time I needed for the funeral. The would have let me take another 5 days off (paid out of my sick leave, I have a lot banked since I've been here so long) but I decided to go back to work. I would have only sat home and brooded over everything, work gave me something to do at least. Anyway, this is how companies SHOULD treat their employees. Give them whatever time off that is needed (within reason of course) and not to hassle them at a time when the employee doesn't need any extra stress.
Everyone morns differently, there is no one right way to do it. Whatever feels right to you is what you should do. I was okay going back to work quickly, others may need more time. Some people cry buckets, others don't cry at all. Don't let anyone tell you your reactions or feelings are some how "wrong' because it's not the way THEY felt when THEY lost someone close. It's not about THEM it's about you and your grief. Take your own path, and work through it in your own way.