SPOILER question about the Princess's motivation at the end
At the end, the Princess has Heurtebise take Orpheus back in time so that Orpheus never meets death. This means Orpheus and Death don't fall in love; Orpheus lives more or less happily ever after with Eurydice. (As side sacrifice is Heurtebise losing Eurydice, too, but he follows his orders.)
I missed entirely any motivation for this. It seems against Death's character for her to make a sacrifice. Any thoughts on why the Princess made this magnanimous, selfless gesture? Did Cocteau just leave that part out?