Yvonne, I'm very sorry for your loss.

One way to release some of your feelings is to write a letter to your Dad. When you are done, read it aloud to a trusted friend or family member. You can address your regrets or tell your father all the things you wish you had over these last years. This is a very cathartic exercise. It is also the act of "someone" hearing/receiving the message that counts; it doesn't necessarily have to be your Dad. The person hearing your letter does not need to say anything but simply listen with open ears and heart. 

Death is really all about the survivors. Your job is to take care of yourself in the best way you can and to support your Mom to the best of your ability, which will have to be long distance. It is always your mother's choice whether she is willing to accept the most you can give. Of course, emotions run high at a time like this so even if she is angry right now, you must take this with a grain of salt. Good Luck, Ellen