Chemo brain strikes again
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=7&cad=rja&uact=8&ved=0CEIQFjAG&url=http%3A%2F%2Fwww.alysion.org%2Feuthanasia%2Fmaking-the-euthanasia-chamber.html&ei=U1nUVMrVJIihNuO9hIAJ&usg=AFQjCNFo4n5FLbwWA1Cb70yjlnjzpDdIow&bvm=bv.85464276,d.eXY
Here's the link I used for the chicks. I likes that there was some research, and they did a smaller dose first, to put the bird to sleep, then the lethal dose which can be distressing. Doing alcohol first would allow you to skip the initial dose, but you could go ahead and do it just for peace...
Do you know someone who could come put her down for you? I totally understand you not wanting to use an axe or knife, but perhaps someone else could. It's honestly a very quick, clean death. Anyone who hunts or fishes, etc?
I've used CO2 successfully, but only on chicks. The website I went by...