I had a broody who adopted chicks once and refused them when I had new chicks the next season. Try again, but be prepared to raise them yourself.
When I do this, I do it late at night when it's very dark. I sneak the babies under the broody and sit in the coop for a long time. I wait until I hear the mama clucking to the babies. If it's too quiet, that's a bad sign to me. Then o go out again before the chickens wake up and check again to make sure that the mama is clucking and the babies are still under her.
Good luck! It does sometimes take a couple of tries.
When I do this, I do it late at night when it's very dark. I sneak the babies under the broody and sit in the coop for a long time. I wait until I hear the mama clucking to the babies. If it's too quiet, that's a bad sign to me. Then o go out again before the chickens wake up and check again to make sure that the mama is clucking and the babies are still under her.
Good luck! It does sometimes take a couple of tries.