Taylor, I'm sorry to read Corny refused.
I'm even more sorry to read that you're taking it so hard, and so personally. But I understand, and I admire your heart.
I've come to know you pretty well through the forum, and despite never actually meeting you, I respect the hell out of you and am happy to consider you a friend.
You're a beacon of hope in this world, and in this hobby. I honestly don't know many people who are lucky enough to have the passion you have (for snakes, or otherwise) and you clearly have a heart of gold.
I know it's hard to feel like you can't help Corny, but you've provided a fantastic home and life for him to this point. Keep your chin up, you've done nothing wrong and you definitely have NOT failed him. You're doing what you can. He's a healthy weight, so time is on your side.
You and Corny are in my thoughts. Don't beat yourself up now, you're an amazing snake "Mom". The forum, along with your snake family, are lucky to have you. Keep up the amazing work, Taylor. Corny is lucky to have you.