I'm so sorry to hear about Evie
It is a very difficult decision to make but you are right, it is not for us that we decide, it is the last loving gesture we can do for them because we love them so much. My 4 children were raised with Rocky and he was our first boxer. How lucky we were to have had this loving, gentle boy for his 11 1/2 years as you were to have your sweet Evie to share your lives with. They touch your heart in a way thats impossible to explain to people that have never known the joy of these beautiful babies.
My thoughts are with you and your family at this difficult time.