Oh, what timing! Just a couple of days ago I started rereading Warner after a friend asked for recommendations of good faerie-themed fiction. Her Kingdoms of Elfin is creepy and marvellous and I love it just as much the second time through as I did when I read it in graduate school. I don't think I ever read Lolly Willowes but it should be easy to find.

I think Eco is generally overrated but he has his moments, and your review of Loana inspires me to give it a shot!