She is certainly looking rather uncomfortable right now poor girl, are you there with her just in case ..... Also a small word of warning (yes I'm a worrywart!!) - I would remove that haynet and put your hay on the floor inspite of the mess it might cause. If she does decide to foal and does a lot of rolling around or even simply spends some time lying on her back (lots of mine have done this!) then she could catch her feet in the haynet. One year when we had 13 to foal all in the month of May I was doing my usual visit to the barn (we live on site so easy for us), I went down the length giving everyone a few large handfuls of hay (useful to see who was keen to eat and who might be thinking about foaling and did this about every half hour throughout the night). Found two mares not wanting to eat, one of whom was showing signs of 'any minute now', so I waited and sure enough she was soon in labour. Went in to assist and lovely easy foaling. Came out again to check second mare and sure enough the foal was already on the way. So two lovely babies within 15 minutes (seasoned brood mares). Walked back down the barn to find another mare who had been happily munching her hay now on her feet again, mouth still full of hay, she gave her new baby a quick sniff to say hello, looked me in the eye as if to say 'here's another for you' and returned to hay munching!! I had to laugh she was just so laid back over it all - the older experienced ones are just so great!!