Broody Hen Question - Perplexed with Odd Behavior - Help Please!

hi all... my hen went broody a few days ago and sat for two days straight. she went broody before a few months ago and hatched chicks so i know her behavior. i have a separate area in the back of the coop for brooding... in the morning i let her out and she is all frantic with broody sounds... eating, drinking, dust bath and back to her nest. this morning, she slowly came off the nest and out in the run. she was lethargic but still making broody sounds and puffed up. she drank a lot but didn't eat anything and no dust bath. after i a while, i put her back in the broody area and she did go back on the next. i came back 1/2 hour later and she was off the eggs and laying in the clean bedding. i opened the brooder door and she came out again and drank and layed in the run. i noticed she layed another egg! now, i know that when a hen is broody they don't lay. so, she layed another egg but she is still mostly acting broody - like she's in between the two!! strange. anyone have any ideas what this is about? is this normal? i left the door off the broody area and it's up to her whether she wants to go back and set on the eggs. since she sat on them 2 days and has been off most of the morning, do you think they will hatch even if she returns to them? she just isn't acting right - she not acting right for being broody and she's not acting her normal non - broody self. any thoughts?

sylvia