Oh...he, your chi pet, were both you and your daughter's life long beloved pet for entire 19 years of his chi life...oh my... (sigh)...
You need to meet and be strong about the cycle of life ending and then follows a new beginning and you proactively define as much as you can the new beginning according to your life's pursuit of happiness and reality constraints of time and other factors.
You must not indulge in wasteful emotional negativity creating costly liabilites ill affordable but be positive and know nature's laws prevail despite our best attempts to control otherwise.
Death is consequence of life and both are inextricably coupled. I have tried to deal with death and snatched away from the grim reaper many times even my corporeal self from his greedy grasp: born puppies, puppies laid on and actually dead resuscitating them, etc, and know sometimes you can restore and renew life but never avoid conclusing the cycle of life ending finally at some point when life is not compatibile with physical or mental demands of continuaton of living.
I too have lost loved ones and remember the sorrow and suffering of being alive after being aware of death's extraction either unexpectedly and sudden or delayed and lingering helpless to alter or prevent what I had in my life and loved and left only with memories of what once had been.
Life is never a given only a precious blessing and never lasts before leaving us at a time we always lament and grieve trying to heal the vacancy in our world death created.