Sometimes you have to dig out Ye Olde Monstrous Manual to figure out what the heck you just ate. Especially when what you just ate is a group of little known outer planar creatures. At least she didn't have to choke down the cubic or tetrahedral ones.
What Uvuzi learned from this experience is that modrons, superficially resembling fleshy-metallic spheres in this case, go down without much trouble but turn out to be rather difficult to digest. But 'difficult' isn't the same as 'impossible' and while she decided that the resulting tummyache was more trouble than the meal was worth, that was of little consolation to the modrons who'd just gotten a trip through her digestive tract. 83