I know how you feel. I had a cat (named Lumpy) that was born with cerebal palsy and so were he brothers and sisters. Her mom had it and new she was gonna die so left.
My mom found her and her siblings on a pile of roof shingles so she took them into her house. She took them to the vet and knew they had a bad chance of living. All of the Lumpy's brothers and sisters died days later but she survived.
When I was born she was eight and every few steps she took she would fall over and as she got older she couldn't make it up the stairs. Then one day when I came home from my friends house and my mom told me she was going to have to be put to rest the next morning. Lumpy died at the age of 16 after living a long good life.
She was the best thing that ever happened to me and was with me when I was sad. She was there when I was born and was just so amazing and strong. I will always miss her for as long as I live but having no cats around really made the house quiet.so we got two more cats that really make me happy.
Even though I miss her I know nothing will ever replace her but that having other cats help me stay happy and think of good times I Had with her rather then her death which was sooooo sad.so you should get another cat because that way you won't be as lonely and when your lonely you have more times to think of her. So having another cat will keep you busy and definitely be happy.
Same thing happened to me. But it was my kitten she was like 1 maybe 2 years old. She had gotten bitten by a dog.
She was fine for a while but then she started to stop eating and I took her to the vet and they said she had some sort of virus or something form the bite. They gave her medicine and the said she should be fine and she was again for a couple day but then she stopped eating again and I held her and tried feeding her from a bottle she drank a little but then she refused. She died in my arms a couple hours later.
I was heart broken and I know how you feel but the only thing I can say is to just kepp your head up and the pain will fade. Slowly but it will. Find something to occupy you so you don't think of her as much.
Jus remember she had a happy long life and sooner or later the pain will fade.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.