That is horrifying on so many levels, Connor! I'm so very sorry you're having to deal with this. I can't imagine how I'd feel if Stiles disappeared and another arrived and didn't share the same bond. Do you have a tradition in your world for saying goodbye to companions you've lost? In mine we raise a drink to them or take something special to a place that means a lot to us. Perhaps saying goodbye on your own terms might help?
Stiles keeps me sane, most of the time, and I wouldn't be without him. I had a job in a vet's office back at home, part time when I wasn't at school, and I really enjoyed it. It's what I'm studying to do, eventually, but it's a long haul. I don't know if there's a place here that would want a (almost literal) dog's body to help out.