Ugh sorry, I'm sick and been trying to sleep it off
I went and checked her just a bit ago. Nothing new that I noticed, except maybe her nipples have fattened out a little.
At this rate, I expect I'll have to brief my oldest child on her progress and what to do when the foal arrives as I'm certain I'll die of old age before the blessed event unfolds.
I only have experience with dogs delivering, but based on the yesterday's pics compared to today's, I'd say you are going to have a baby soon!
I havn't read the whole thread (sorry) to know, but... have you been monitoring her temp? Most mammals experience a slightly increased temp when they are nearing delivery. I think with dogs it is like, 2-4* difference... I'd imagine something similar happens with horses, too? I dunno... Good luck! Excited to see baaaabeeeehhhhh pics!