Bullying hen

It is not easy when you get an Atilla the Hen.  You have her welfare and that of the rest of the flock at odds with each other.

If you can keep the bully isolated for a few days it will allow the others to regroup and make them more resilient to attack.  If she starts again the second she gets back, take her out again for a few more days.

If she carries on despite isolation periods, you might have to look at a more permanent separate set up for her.  Silkies are quite small, so a rabbit hutch with a run beneath should be OK and you can pick these up second hand fairly easily.   If she could see the others it would help, but you would have to monitor her and see if she was happy on her own or pining.

Other than that it would be rehoming, but you would have to be honest about the reasons to warn whoever was going to take her, or culling as a last resort.

I would pick up the one who was more aggressive and tuck them under my arm and walk around and sit with her. I had to do that several times, spring time makes hens do strange things.

She wants to be the dominant hen, which is fine if you do not have one. Some have used beak clips, but I have not. If you do isolate her, can you do it within the housing area so she can look out? I was always the cockerel figure.
I often repeated my pick up routine every few days, sometimes a fewtimes a day, but mainly in spring. I would also be holding her, chatting to her and walking around the garden, but not stroking her, as a cockerel would. I would also give somemixed corn to the others when doing so.
Have they got things to entertain them, cabbages, pumpkin etc? No chickens are allowed out to free range so  adding entertainment is good. Mine loved sweetheart cabbage.

I’ve tried by giving them things to do even walked around with her. Pecking spray is not working. I can’t believe she’s doing it it’s not the pecking order which I would fully recognise as I’ve had them over two years it’s strange because the one she’s doing it to is the dominant one. She is so docile each time one of the others would go near her she would crouch down and squeak. I will try and let her out today and carry her a bit more but even if it does work I don’t trust her at all when it comes to leaving them

Nipped it in the bud so I would say a week