I am 82, live alone and I lost my 13 yr old poodle mix a year and a half ago. I still miss her terribly every day. I got her as a two 2 yr stray about to be euthanized at a kill shelter. She had severe separation anxiety which never did improve much even though I tried everything. But I found a solution that worked because I loved her so much, there was no other option. Where there’s a will there’s a way!
I found a neighbor who was desperately struggling financially and I paid her to doggie sit. My dog, so happy not to be alone, came to adore her. I am also very low income so I was only able to pay my neighbor $10 each time she watched my dog ($20 if it was more than four hours). This turned out to be a win win situation for all. I helped my neighbor financially, she helped me, and my dog quality of life was much improved.
Separation anxiety is a difficult situation. I commend you for seeking feedback and wish you a peaceful decision.