How awful, DogBuddy
I can't even imagine how you feel...
Remember, though, that she'll be with you always in your heart, regardless of where her remains are. There's a bond that's forged by love that is still there and always will be.
I like that idea of planting a tree or a garden or putting up some other type of memorial that feels right to you, too...
I wish you heart's ease and peace of mind.