My hen pet never got broody after her first chicks. She lived with one chick ever since.. (until now that is, if you read my last post) and when the chick got old and broody every now and then, the other sat next to her all day long.. I took her with me to play, etc. Actually that was the only time I could have my chicken pet back, since they missed each other if I split them, and the younger was never an indoor chicken, always lived outside and in the coop. I hope you find something she can do. The previous post had some ideas, but if you see she hardly moves from where the other are place some food toys near for her to play, or so, melon is also something they like and stay a while entertained. Or a ball with something she likes inside, make holes so when she moves it the treat comes out.