She was a beautiful, happy dog and had always been so gentle with the kids. The day before she died, she was perfectly fine, and on Sunday, she got to run around outside with the other dogs.
She died suddenly of a hidden tumor that filled her heart with fluid, which caused the rest of her body to shut down over the course of the day. By early afternoon, she died, in Jim's arms at the vet office. It was very sad and very shocking.