Thank you for expressing your concern. But what comes to mind that could possibly be wrong? She's shown slight tenderness to gravel since she had to walk on it (as soon as the snow melted). So I'm not sure if she would have been tender before but has not been unsound by the time we get to the arena a single time.
My mare is only eight and the laminitis was caused by overfeeding high quality feed. The vet said that they had experienced an unusual amount of founders in young horses in the area around the same time as Kitty's and they aren't sure why.
Also it seems that she's more ouchy on the really loose gravel than on the semi-packed down gravel.
You know, I know her breeder and I might be able to ask if she'd shown any signs of tenderness when she had her as well.