Everyone grieves in their own way. I write poetry or a story about my dogs. And the past 7 years I have planted a shrub, tree, perennial grass or rose bush for every dog that was either officially ours by birth or purchase...and even those owned by dear friends who took Rescue Re's
Trying to focus on the 'now' is the best way to begin to heal. You are very lucky to have a new pup. No, they aren't taking the place of the one you lost so tragically. But there are there for us - trying to help us visual a new friend and a future to share with. It's OK to cry, it helps to put closure to the sadness and opens the way for remembering the good times, the fun and the happy times you both shared. By then I am usually ready to do a couple pages in my Dog Albums, dedicated to the one who is now at the Rainbow Bridge.
But, Caroline is absolutely correct...support groups help and your vet should be able to find you someone to talk to. Focus on the new puppy...you have so much to learn about each other....and the bond must already be strong.
Sandra