I'm sorry about your girl, I know how horrible it is. Keeping chickens doesn't seem as easy as I thought when I read about them. I guess sometimes things happen and we just have to move on. I've lost 4 of my 8 to mareks. It's heartbreaking, I know. I took my last 2 to our humane shelter to put down. I can't cull myself, neither could my husband. I pay $25 to them and to me it's just worth it. I agree that it would make it much harder to deal with.
I'm hoping to add a couple more soon, I'm getting only vaccinated chickens and hopefully I can find some older ones who have had time to build up as much resistance as possible before they come to my house.
hugs to you!