I have 2 silkies that have never had eggs put under them and I have tried every single remedy listed on this site and they are still broody. I just make sure I put the food, water and special treats near them. I guess someday i will let them raise some babies. Its the only thing I have not tried because I do not want any right now. Mine are rather healthy though so like you I am just letting them do what they want. They want to sit on a nest. Sometimes I even give them fakes to sit on. They are so dang thrilled. They rearrange them constantly. These birds just have a mothering nature. Just make sure you watch her more carefully and give her some special treats. i will lock the others out and give mine eggs so I know they got some. The others are much more used to ensuring they get their fair share.