You poor thing; making that decision is one of the hardest things a pet lover will ever do. I'm sure Alley knows you're thinking about her. I wish I had some magical words of wisdom and comfort for you. Please don't second-guess yourself; you're armed with the info you need to make the right decison.
I wish I could give you a big reassuring hug, and tell you how sorry I am.
I have no doubt she knew those treats were from you. She knows how much you love her and you are making such an unselfish decision here. You are putting Alley infront of everything - thats unconditional love right there!
Be gentle with yourself at this time. Know that we are all here for you right now and our heart's weep with you. Its never an easy decision but its the right one. Your letting her cross to the bridge with dignity
just checking in................you have made the most difficult decision but you have done it out of love and respect for your precious Alley she can rest in peace and you will know that she had no suffering
She will have new fur-friends and the love that you send will make her purr for you forever