Okay, here's what I see.....just perfect and nicely loose elongation! An udder that looks pretty ready, except it's hard to see because of the color, but with staring, I'm saying she looks ready in the udder department.
Baby still a bit sideways, but with her pH at 6.2, DO NOT LEAVE HER ALONE!! Pack up the sleeping bag and be with her. She's going to do some more rolling to get that baby lined up perfectly, but she should not be left alone. NO sleeping and checking on her hourly! That's not enough -- baby could try to arrive at 1 hour and 5 minutes, and might need your help and you wouldn't be there for another hour. That would be too late! So, hunker down in the barn -- I used to sleep in the stalls of the sneaky mares -- as she's looking really ready. You will start to see that inside lips of the vulva go from a salmon color to a red. At that point, gather up the supplies -- lubricant being an important one. Print out the "Preparing for the Birth of your foal, and post it in the stall for a reference. We pray you will NEVER need it, but it will be there for you should you need it.
I'm very excited for you, and hope to hear an announcement soon!!! To me, pH is what I relied on -- and yes, they can sit at the 6.0-6.4 for a couple of days -- but I PROMISE -- it will be worth being tired but available to her, should she or that beautiful little one need you~!!!
Sending lots of prayers for a safe and uneventful delivery of a healthy little one!! Keep us posted!!
~~Diane