There was no visible change in appearance this morning. The fluid was more opaque, sticky, bland tasting and did produce a bit of butterfat when I rubbed my fingers together. pH is still hovering between 7.2 & 7.5. ppm above 200 but not really 400 by the color.
This evening the fluid was definitely opaque but not really condensed milk looking. Sticky, butterfat producing, but not sweet. pH hanging around 7.2, but the ppm, according to three sets of eyes (mine, Chuck's, and Guin's) looked above 400 but not quite 1000.
I don't think she'll give birth tonight however, the weather here is awful....intermingling rain and snow; temperatures dropping from mid-30's F today down into the low teens overnight. So, we've decided to move her and *Glory in (for company) and Guin and I will sleep down there "just in case".
The birth of a foal happens so quickly, compared to a human birth, and so if something goes wrong it goes wrong very quickly too. This is not something I'm willing to risk.