This is truly a saddening story. The poor woman just couldn't let go. This might sicken some people, but let's not forget that we too have been this woman. In one of our previous untold lives we were a woman who couldn't let go of her husband, and in another life we could have been the husband himself.
Rather than being disgusted or saddened, we should meditate on this story and analyze the feelings this woman had from her point of view, the sheer attachment and then relive her experience of seeing the body of her husband decay. This way we not only see how much attachment people have but also impermanence. My Guru has taught mediation on the deaths of others to cut attachment to that person. It is only by meditating on something like this do we actually have an experiential understanding of 2 important things: the level of attachment we can suffer from and the impermanence of death and change. Surely this is suffering, Suffering of attachment and suffering of change.
Just to comment on Diablo1974, you are right to say we should love others. But I disagree slightly, you mention parents and family, I agree with that, but we need to cultivate equanimity between our loved ones, enemies and strangers. Only then can we truly develop the Bodhicitta motivation. There is a difference between love and attachment for sure, but most of actually love another person, not because of that person but what that person does for us. If you meditate on your relationships with other people, the greater love you have for them is directly related on how much you think they do for you. All of what i've said is all well and good, but to actually practice this is another matter altogether.
The woman and her husband will surely be in my prayers tonight. May we all knowing their story, develop insight into the working of our own minds and further our spiritual insights and attainments to be able to help both of them in our future lives together.