What should I do about my atiel birds?

Ok my pet tail names,lady laid and egg. Her mate is Solomon which is in the cage with her. I went and bought a nest box. I placed her egg in the nest box and she started going into the box alone with Solomon to, I am guessing to roost on the egg. Here are my concerns: So far I have not seen lady eat today since she has been sitting on her egg. I read that the male bird should be feeding her while she is roosting. If this is the case then Solomon her mate is not feeding her. Will she, Lady come out to eat sooner or later? Today they both have been staying in the nnest box So that means either one have eaten today. I just seem the male bird peep his head out of the nest box but he is not eating either? What should I do? I'm worried snice both these birds mean a lot to me and if something was to happen to them then it sure would put the hurt on me. Thanks for your answers and any other advice you can offer would be greatly sppriciated!