What is the difference between grief and major depression? A few months ago, my boyfriend died in a car accident. Lately, I have been very depressed, but I am not sure if it is just part of the normal grief process or if it is depression.

The mother of one of my best friends from high school was diagnosed with liver cancer a few months ago. She is quite ill and in a lot of pain. She's been in and out of the hospital lately and things don't look so good. My own father was diagnosed with prostate cancer a year and a half ago, but he is really doing quite well (with medication, treatment, etc.). My friend's mother will probably be dead within six months to a year, so I'm not going through an immediate crisis.

My question is: What things should (and shouldn't) I be saying to, and doing for, my friend? I try so hard to be there for her but I really don't know what she's going through. She is very matter-of-fact about the fact that her mom is going to die. But I'm sure there's something I could be doing, isn't there? I hate feeling like I'm actually making her feel worse! Could you give me some idea of what she might be going through right now and how I could help? Even if it's a method for taking her mind off it occasionally (if that's a good idea).