
I'm so sorry for your loss. I do understand how you feel. I recently lost 3 birds to an eagle attack, one outright, another that I nursed for a week before she died and a third who died of shock a few days after the attack. I felt terrible that I was giving Ethel epsom salt baths every day and trying to treat her wound, when I should have saved her all the pain and put her down the first day. I was so worried about her that I didn't pay too much attention to Rosie, who was standing off on her own all the time under a tree. I could see she was feeling scared or something, but had no idea she would die, so I did nothing for her. I just went into high gear for Ethel and on making their chicken run more eagle proof. It's heart breaking.

I'm just saying, we are all doing the best we can for them, and sometimes we just don't get it right. We know how you feel.
I have a suggestion for inside water. I have seen others on here do it with pvc pipes, both for the water and the food inside the coop. The actual container can be outside the coop. I haven't done this, but when we build a new coop next year we will incorporate it.
I think you should get some chicks and start over. I don't know how big your coop is, but just remember, the coop should be 4 SF per bird. We have added coops as we added birds to keep that minimum ratio, but I do find that several will cram into one small coop anyway. Oh well, at least they have the options.