Egg Bound??

Hi,
One of my Japanese bantam hens is acting a little strange. She's been rather puffed up and quiet today. She seems like she has been trying to lay an egg all day so my firsts thought was that she is egg bound, but she has not been standing like a penguin. I brought her inside because it is very cold and gave her some warm water and scrambled eggs. She took a few gulps of water but then sat back down and ignored the eggs. She is breathing a little heavily right now.
So I'm not too worried, but, still, I'm not sure what is going on.
Her eyes are clear and her vent looks fine.
Should I let her soak in an Epsom salt bath? Or just let her be?

Thanks!