I read this book a few years ago and found it interesting. In the wake of actually experiencing grief myself I thought it might be worth rereading.
It's a good book, well written. I think, however, that while her experiences may be analogous to mine (the cognitive deficits, the denial, the avoiding of reminders, etc.) the simple fact that she had so much else to deal with, with her daughter's illness, makes the story somewhat inaccessible.
It's a fascinating insight into the way her mind dealt with the sudden loss of her husband. Some of her experiences are similar to mine and, no doubt, every other grieving person on the planet. But the simple fact that her situation is not mine - I do not have an ill daughter, I can not rely on a life's worth of work to buoy me up while I grieve, I need to work - means that what she went through is not particularly comforting to me.
This is a good book and you should probably read it. Just don't read it while you're grieving, because it's not the comfort they suggest it is.