I lost my best friend a few months back. I had her for a very long time. Her death was sudden. Is there anything I can do to ease the Pain? Does anyone know any good books/articles, websites, on Pet Loss?

I've tried a few, but none of them stuck with me.....
I've also tried to get support from friends/family, but that really didn't work, after all, she is just "a dog" right? ridiculous as that sounds, that is what they told me. They all knew how much she meant to me.....what else is a girl to do? I don't know how to cope with this....