You should not blame yourself , as Yings time sadly was up.
And to carry guilt around is the worst thing in the world, as that will not help.
Yings no longer in pain, and is with the Pet Angel Army touring all the Pet Talker Homes.
He will be by to see You, Your Cats and Yang.
Ying will be waiting for you in Pet Heaven , and does not want you to be sad as you will be together again
One Fine Day.