Oh, what a deliciously dark and twisted fic. *loves*
Bella is quite cunning indeed, and I love how taken Regulus is with her. (He didn't stand a change, poor boy...) I don't think I've ever read that poem before, but it's certainly very fitting (though a bit dark for children, I would think 0_o).
The mind-fuck of Regulus was great, thanks for sharing! :D