I have had the loss of dog that have been too soon in their life, and also some that had a good long life. I sorely miss them all. They have brought me more happiness than sorrow. It's hard to let go because of all the joy they bring. Be thankful for the 12 years you have had with Daisy. I had a Bassett named Daisy, she lived 13 years. I could go on and on about her and my other animals. My heart goes out to you.