Not Caribdis.
I changed the song and it worked, if you need more help just say so and I'll look into it more for you :D
Edit: Talk to everyone first before seeing Rebecca.
thank you man. I figure out the problem now. When in the mansion looking for the grimoire I chose to take the book over rescue the girl so it automatically made me fail Rebecca path (kinda funny that those two details connected to each other). So I went back and chose the other one and I got through Rebecca now