As callous as it sounds, I say good riddance.
It's callous alright! What do you know about her, how she started on drugs, why even? As is often the case in modern society, there's always some arsewipe drug dealer looking to get another young person hooked... and Amy Winehouse may very well have been one of those victims. Yes, she ended up being a mess that you wouldn't want to be an example to your children, but you do not know her demons, why she couldn't kick the habit.
Put bluntly, you wouldn't want somebody speaking ill of your child like that, especially so soon after his/her premature and unfortunate death, so how about you think twice before speaking such ill in future.

Again, somebody else's child. Karma has a funny way of turning things like this around... so be careful of what you hope/wish for.