I'm so sorry for your loss, Cathy1!
It seems even harder when it's unexpected and there's no time to prepare yourself. Jasper was very lucky to have had you looking out for him. Even though it hurts, you know you did right by him.
"We are--each of us--dying; it's how we live in the meantime that makes the difference."
"It's not what you gather, but what you scatter that tells what kind of life you have lived!"
"Be kinder than necessary, for everyone you meet is fighting some kind of battle."