I'm really sorry you're having so much trouble with those bites
Sending vibes for your father as well. As for the feral.. you did everything you could. I like the idea that someone had of building him some kind of enclosure-but if that's not an option, then you really need to know that you did all you could. Like someone else said, you didn't know that he would bite you, and if no one will take him and you can't release him - well then there is nothing in your power that you can do-therefore it's not your fault-at all. You did your best-most other ppl wouldn't have even bothered trying to help them. Remember, we can't save them all, but the important thing is that you tried your best.