Oh I am so so sorry for your loss. You did everything you could. You could not have done any more. You did all of this through love and yes, seeing a double digit or a triple number is a sign from the universe to convey to you that the time was right for your pet to depart. And your pet was blessed to have had you to look after and care for him/ her until the end. Spirit always guides everything.... There was nothing more you could have done.