If you are able to spend some time in the coop with her I would open up her restriction while you are there to observe, if she comes off of the nest with the little ones then you can move her, if she sits tight then let her go and check her again in the morning or later this evening. Watch that there is no where for the little ones to get trapped away from the nest, they may start roaming after the first 24 hours and chicks are great at getting themselves stuck places they shouldn't be, or not being able to get back into the nest for some reason or another. Some chicks CAN fit through normal chicken wire, but they sure don't seem to know how to get back through the way they came. If you are using wire to restrict them it would need to be something along the lines of half inch hardware cloth....
Good advice Fisherlady...and ain't it the truth...it amazes me how the cute little dummies can get themselves into the silliest fixes...I've had them chirp frantically just around a half blind corner...uhmmm....walk three paces forward then to your left and you'll see mom. Had to remove a board which was screening the nest box in the main coop because one couldn't figure out how to get back to mom and nearly chilled to death.
