I tried LaminaSaver with my severely foundered pony some years ago. It did not work for her and was very expensive. I literally tried everything with her and it came down to the most basic of things: low-sugar diet and proper trim (and Pergolide for her Cushing's after diagnosis). I second Marty in that Pete Ramey is a God-send to foundered/laminitic horses! My pony had never worn shoes and I wasn't about to nail anything to her extremely painful feet. I did use boots for her and foam cushions, too. I didn't personally try the glue-on shoes.
Get your little mare tested for both Cushing's
and Insulin Resistance (IR). They are not the same disease though horses
can have both. Although she has both Cushing's and IR, my pony is sound and healthy today at 27 years young. She had serious rotations of her coffin bones but they are now ground parallel and her feet are finally looking like "normal" hooves. She was a
very severe case and is profoundly insulin resistant--thankfully she has a fighting spirit and had a very strong will to live. I now always test my grass hay to be sure it's low enough in NSCs (non-structural carbs); most IR horses are safe with an NSC of less than 10%. Princess must have below 8%. Even grass hays can test high in sugar--I've seen enough tests to know.
All my horses get the low-sugar hay and it is worth it, especially for my minis. Until you know the cause of the laminitis, I would play it safe and stick to low-sugar feeds. If you use beet pulp try the kind without molasses. My pony can have very small amounts of the WellSolve Low Starch feed (by Purina). I use it to mix her supplements and she eats it readily.
Also check out the Cushing's group on Yahoo. It is a very active group with many knowledgeable people on the board. It's moderated by Dr. Eleanor Kellon and also someone on Lil' Beginnings (Hosscrazy, I think?
).
Good luck with your mare. Please keep us posted.