I have no experience with anything like what you are facing, but I went through the CIC and found the following OP manuals that may contain some answers for you.
A25(1) Humanitarian and compassionate considerations, and R307
This may be a case that you should discuss with a reputable lawyer for advice. I am sorry that your family has been forced to face such trauma and hope you are able to bring them peace soon.
thanks a lot for your help and kind word. do you recomend any good lawyer? i live in toronto. thanks a lot once again.