Joshua Kronengold

Shadow Magic is very much genre fantasy -- but that's rarer now than it was (that said, I could do with the baddies being a bit less...uniform, I guess), and it hits the eucatastrophe very, very well.

I loved The Harp of Imach Thyssel. And remember it with the vague fondness I remember many books of ~20 years ago that I never reread. It's in the queue as well.

(hmm. I'd think the book that -really- put her on the map was Sorcery and Cecelia, but that was much later, of course).