Yes, he did scope her. We discussed lots of things that pertain to her daily activities and he thought her feed was suitable. Saying that, I do know that vets mean well but they don't always know the ins and outs of everything when it comes to nutrition. What you say makes sense, and it does fall in line with other things I've researched about the non starchy feeds. So many things are contradictory though...like seeing feed less starch but pellets are okay...because I did see that on a few sites. I've even seen that feeding rice bran is desireable, but that is very starchy as well.
After talking it out, which is sometimes all I need to do to get my thoughts straight, I think I may just cut out the Strategy all together. It could very well be what's upsetting her belly and it's just now starting to show outwardly. Since she already doesn't need much to keep her weight up, the alfalfa alone could very well be sufficient. I know ulcers can happen quickly and I want to prevent that as much as I can. I just worry so bad about colic and founder. My husband rolls his eyes when I stress over what she eats but he didn't work for a horse vet and see the cases that I did...or see a NSH whose front hooves literally came off because she foundered so bad.