Yep, one of mine is broody too, but I just think it is the wrong time of year to encourage her.... I bet by spring she will have had enough (she was trying to sit for most of the summer, but I really do not need any more hens, and we didn't manage to source any good quality goose eggs).
But I always run the incubator in parallel to a hen sitting, and at this time of year any chicks would need the heat lamp for such a long time that the cost of electricity is really not worth it.