Broody hen wont eat or drink

[Vian]

How do i stop broody behavior? Ive never had a broody chicken, she's been like that for over a month and wont eat or drink unless i remove her from the nest box/coop, and even then she barely eats or drinks (i have food and water in the coop with her but she ignores it or the other hens eat it). What can i do? She has noticably lost weight and im worried im going to come out one morning and find her dead in the nest box.

 

[sourland]

Remove her from the nest site and lock her in a cage or coop away from her chosen site.

 

[Kiki]

Raising said cage off the ground with zero nesting material will help too.