I've been reading this thread, but not posted on it yet, but I am so sorry to hear about little Hope Rom.
Pleased don't beat yourself up about it. You did brilliantly, but it just wasn't meant to be.
My old friend sheila used to say to me that all these things really are sent to try us, but its how we handle the situation that makes us stronger people. And you will come out stronger for this.
Please don't even consider giving up keeping your chooks, as you know I've got a lot more chickens than you have, so pro rata my losses are going to be more than yours, but imagine what it feels like to go into the henhouse one morning to find that something in the night has spooked your young pullets and you find 54 of them lying dead in a corner!! Then some weeks back I found one of my amberlinks really badly pecked. She was about 6 weeks old and almost dead. I cleaned her up the best I could as not only had they pecked all her tail feathers off, but also her vent was badly pecked. She was in such shock she could hardly eat or drink, so I kept her in one of the brooder boxes, near the others so she could still see them, hand fed her for a while with the yoghurt and chick crumbs in water etc. Sprayed her entire rear end with UKADEX.
She is now back in with the motley crew, smaller than them and seems to always have a dirty bum, although a lot of it is the UKADEX still on her feathers, but she only has a tiny vent now its got better, so can only do small poos, but she is fine. Whether she will ever be able to lay eggs is another matter though.....
But I'm still here, still doing my best to give my girls and the occasional boy a good start in life! Keep your chin up girl!!!!