Sometimes I write stories about Hyacinth. If I do, I'll try to remember to put them here.
Note that across multiple stories, there may be continuity errors and such, just due to the exact nature of the character. I don't have an exact method of categorizing stories, though I'll try to lump similar canonicities together (for example, anything taking place in Equestria or some similar ponified timeline would probably be lumped together, as opposed to something like a DnD-inspired setting).