Jed, go to the vet.

There are other ways that you can do it yourself, but the vet will let you stay with her (if not, go to another vet). Tell them what you're doing and why.

In some ways it's like hospice, or holding your friend or loved one as they go.

Believe me, having someone who knows what they're doing is best. My family and I have had to do it other way -- ask the vet for help.