Tramadol comes in a liquid form, it’s a human drug and even though new research shows it does not do much for dogs as a pain med, it has sedative qualities, your vet could call it in to your local pharmacy and they give you these small syringes, if you hold the dog’s mouth open and squirt it in then rub the throat till you feel her swallow.
Some dogs do grieve when a pack member leaves, be careful, sometimes they attack a dog that they sense is on the way out, it’s an instinctive thing. My terrier started to do this at the end.
If you can (after a respectable grieving period, of course), bring in another dog if it is within your means. Otherwise, give the survivor lots of attention and long walks and 1:1 attention.
I know what you are going through, no decision feels right.
