I am so sorry for your loss but you can't give up. Take your time to emotionally get past what has happened, fix your coop and get some more chickens. I too had my entire flock killed due to stray dogs. I spent 3 days curled up in the bed crying and then I got MAD. Everything got fixed and I got even more chickens than before. Eight years later, I still cry when I talk about "Conda" my EE because she stood her ground and tried to protect the others. Don't beat yourself up. You are not a horrible person. As for getting full grown laying hens instead of chicks, you can look on your local craigslist. There are usually people in every city on craigslist with birds they are selling or maybe someone at your local feed store knows of someone close to you that sells started pullets or layers. It is going to get better as time goes by.
