Danielle............ I'm so sorry you lost this filly.........hugs
I wanted to share my experience from last year.
I bought a bred mare in January of 2004.
At 310 days she started waxing, she waxed for 13 days. I was new at foaling so didn't think much of it. Now I know I should have had the vet out a couple of days into waxing.
At 323 days without any warning at all my mare popped out a baby at 5:45 AM. She didn't even lay flat to set off the halter monitor. Luckily I was awake and saw her go down on the camera.
By the time I got out to the barn, only 100 feet away and only about 2 minutes from when the mare laid down, the baby was out and so was the placenta. I ripped open the sack, but the foal had never even tried to move.
The foal had a heartbeat so I grabbed her and rushed her inside the house and my Father and I tried to do CPR, we hung her upside down by the back legs, you name it we did it. After 15 minutes of trying her heart stopped. She had never even tried to open her eyes.
I took her back out to her Dam and called the vet.
He looked at the placenta and immediately said that it had probably begun seperating a couple of days before that and the foal had slowly been suffocating. The placenta was almost purple in color. He opened the foals eyes and they were dry, he said it was a sure sign she had been dying for at least a couple of days. Even though she had a heartbeat when she was born there was nothing we could have done, she was already brain dead.
The vet said from how the mare had been waxing for so long, how the birth went, how the placenta looked and everything else in between that the mare had more than likely had an infection.
My foal looked almost exactly like Dora. I don't mean color wise, but body wise. If you would like to see a picture for comparison just PM me or email me and I will be happy to send you one.
I don't think there is anything you could have done to save this baby.
And just as an FYI for everyone...........premature can be different for every mare and every foal. Many on this forum have mares that routinely deliver foals before 300 days and the foals are fine. My one and only foal this year was born at 314 days gestation and was premature in every meaning of the word, she had multiple preemie related problems and is still recouping.