I have a little bit different take on what needs doing.

Take her to her favorite place, and do her favorite things, assuming it's outdoors and out of town. When she isn't looking send her off with a small caliber rifle and bury her there. To a seasoned dog a Vet is a trip to The House of Pain in their minds.

I'm so darned sad for you both and have eyes full of sand.

Kindest Regards
and Condolences

Bruce

Hunt with Class and Classics

Religion: A founder of The Church of Spray and Pray

Acquit v. t. To render a judgment in a murder case in San Francisco... EQUAL, adj. As bad as something else. Ambrose Bierce “The Devil's Dictionary”