I just came to get an update and i read the news about molly. I am so very sorry to hear about her passing away. It is never easy to lose a pet no matter how long you have had them. You did all you could and she is lucky to have had a chance at least to live. I know its tough right now but i would also go to the feed store, it is there fault that she died.
I'm sorry you had to go through this.