First thing I noticed is that she does have a bit of an udder. I just assumed that she had recently weaned off a foal. She is on the thin side. I may just be imagining it, but to me her udder seemed larger... and she does have milk. I have never have a broodmare, only brood goats lol, so I can't really make any comparisons to a mare that has weaned off a foal.... and it just seems late in the year to have recently weaned and still be in milk... but I suppose she could have had a late foal??
She's put on some weight, but that's not indication enough for me to believe its foal weight and not just from actually being fed well.
We have the vet check her when we got her home, but not a pregnancy check....