It's very sad when you lose a pet. I can still remember my first cat Mitsy. She dissapeared one day and never came home.
I remember looking out my bedroom window when I was young, almost willing her to come back.
She never did some back, which was very sad but now when I think of her I think of her with fond memories. She was a lovely cat just like your Toby.
Do you think you will get another cat? Or do you not feel ready yet ?
Have a good birthday.