she does not need a heat lamp, she may get too thirsty just sitting under it. you live in CA so, it is not really helping IMO. leave things as is. you can add stuff if they hatch on banding day, If you think they need a little "somethin" in the nest bowl. just think of all the feral that hatch out, they have no more than an overpass to nest in and on.....the less you do the better. just relax and send postive calm energy when your around her. thats it.