Really adore this song and the video, and what's really striking about this video is how much it represents grief hitting you hard. Usually when you are told someone's gone, it can take ages for it to sink in - hence Avril acting how she does at the beginning, normal, doing everyday activities. She knows someone's gone, but her mind hasn't taken it in. It's only towards the end when it really hits her that the person is gone, which is why she breaks down in tears and shows her insecure side. Another thing about this video is that when you're grieving, people usually put on an act of being someone completely different than who they are - which may be another reason for Avril looking the way she does here, a completely different person to who she is. But when you're alone and the grief all comes back, you realise that you are still the same person on the inside, no matter how much you want to pretend to be someone else to cover it all up, to pretend you're okay. So yeah, I really adore the work Avril's put into this. Sorry for the long comment! XD