The pain is proof that you are a human capable of love. I know what you are going through, and it sucks more than anything. I know the feeling like you are just going to throw up. I felt that too before we had to put down my baby. Tomorrow, will probably be worse, so be strong for her. Then at least she won't be in pain anymore, and you can get started with the painful grieving process. You may be able to hug her at the end, my vet sedated my baby before the whole process, so its not as stressful. And afterwards, the left us all the time we needed with him before we left. You could maybe take a stamp pad, and get a paw print too. Are you having her cremated? If so, and you are interested, I know a lady who makes beautiful dichronic glass necklaces, with a tiny bit of the cremains in them. Pm me if you would like her info. I am so so so sorry.