I've been wondering whether Ashes to Ashes (the excellent BBC Life on Mars spin-off) should have been subtitled "The Chronicles of Alex Drake, Unbeliever". Because it seems to have more than a little in common with the Thomas Covenant books.
Not everything, mind, she's not a leper, she doesn't rape the first person she meets in 1981. But on the other side, she does face a near-death experience (and in fact is possibly dying) and then wakes up in a strange world which she refuses to believe is real.
I think it's similar.