Sorry to hear your loss. I recently lost my 17 year friend, Mozart, my pet cockatiel. He suddenly was dizzy, then again he seemed out of it, so I was holding him, he started breathing hard, and i knew it was the end (heart giving out, Cockatiels live about 17 years average/long life)
He died in my hands. I cried so hard. he really will also be missed.
A pet really is a part of one's family.
So, again, sorry to hear you lost your great friend.