Poison's a tough way to go. Too bad you couldn't have gotten her to the vet as soon as you noticed. We had a dog that appeared to have gotten into some under a porch, left there by previous tenants. Vets were able to save her and she lived to be 14 or so.

Condolences to you and the family.

I hate f'n rat poisons. There are many other alternatives.

The desert is a true treasure for him who seeks refuge from men and the evil of men.
In it is contentment
In it is death and all you seek
(Quoted from "The Bleeding of the Stone" Ibrahim Al-Koni)

member of the cabal of dysfunctional squirrels?