Yeah, putting pets down is a real hard thing.
I remember having to put the family dogs down. My father couldn't do it and i was handed the task both times. The worst part is when you put them on the table and the vet sticks the needle in. The expression i got from both dogs was as if they were saying, "why are you doing this to me"? Then the eyes close forever. Images that have always haunted me
Soory to hear about your cat SteveToms.