I think that the more vitriolic posts on this thread should be directed entirely at the press as they whipped up the maudlin, fake sentimentality which surrounded her death. She cannot be held responsible for that, nor can her sons or the rest of the Royal Family.
The sad thing is that a mother who was loved by her kids died, so just bear that in mind before you gob off about her and if you still wish to, then I suppose you can. But it really is probably better saved for the national disgrace that is the British press.