First of all, it's her money to do with exactly as she wants outside of taking care of the obligations she has to taxes and paying off anything she owed on her estate. We can speculate about what a bitch this woman was and what she should have done, but in the end, it's not anyone's business but hers what she does with her money.
I don't agree with a judge changing the terms of her will so her grandchildren got money. Leaving $12 million to a dog is looney, but it was her money. I feel the same way about what happened with J. Howard Marshall and Anna Nicole Smith. Unless it's illegal, a person should be able to do whatever they want with their money either before or after death, no matter how stupid or wrong it may seem.
I'm actually glad she left so much money to animal charities. Most people will their money to humans-- I'm sure the percentage of what kind of charities people will their estates to far exceeds what is given to animals. There are plenty of charities that benefit humans. On the other hand, animal welfare isn't really high on the list for most people when making charitable donations. Animal shelters do a good thing and they always need money. As humans we have a responsibility to the animals that we domesticated and/or pushed out of their habitats. Sadly, most people don't see this. If this misanthropic old rich lady wants to give her money to animals, good for her and good for the animals.
This is nothing like seeing a sick child and a sick dog and taking care of the dog. Even so, in that situation you'd have 10 people helping the child and maybe one trying to help the dog. But it's not the same. If you're so concerned about saving children what are you donating to childrens' charities?
If you feel so upset by what she did, you go out and make a ton of money and leave it to whatever cause you like. I'm sure if she left the money to a human cause you don't approve of, you'd bitch about that too. It's still not your money.