It is nice that you took care of Otis, as much as he would let you. I'm sorry to hear that he has died.
A couple of our female cats were born outside (to a cat we had owned for some time--the mom loved us) and they will not let us touch them. When Mr. Frodo was alive they came in to be with him (the orange one wouldn't come in after we got the dog), but they did not want us to touch them. Since Mr. Frodo was killed they won't come in at all.
Fortunately, we were able to catch one of their babies when they were young enough (I mean two babies, born to one of them). Tony and Carlos have thrived indoors. They love us and they like the dog.
Thank you for sharing your lovely tribute to Otis with us.