I'm sorry, I laughed really hard after reading that, and here is why. First of all, the puppy was already dead which was probably the best fate it could hope for with a breeder who would let the little pup go at 4 weeks, and a buyer who would use it, or it's carcass as a weapon.
Second, I actually think it's funny that there are people out there who are so selfish, that it would NEVER occur to them to grieve. I try really hard not to be upset by sociopaths like this, because I believe very strongly in Karma. I really do think this nutjob will have a life miserable enough to serve her right for being a puppy carcass weilder.
Now the funny part is the fact that this bad breeder had to be knocked over the head with a puppy she didn't do right by. This is of course assuming the pup was only 4 weeks old. If the pup was only 4 weeks old, then that breeder got her instant Karma back in the form of a lashing with the very thing she put out defensless into the world.
Imagine the puppy on the rainbow bridge screaming, "take this you awful b*tch, I'll teach you for doing this to me".