What color is her hooha? Remember, these ladies can stop their labor up to a certain point, if for any reason they decide to! But, it sounds like she's doing fine, unless you're seeing something abnormal? Watch for pacing and "cow patties" -- and a red vulva. Keep us posted, and happy foaling!!!
Oh, and you'll forget about being "mad" once that little one arrives! Bet you forget how tired you are, too!!