Is it normal that my girlfriend wants me to eat her?

I don't mean eat her out, I mean she literally wants me to eat her. I knew she was kind of messed up before I started dating her a year ago, but I never expected this. She says I'm the one and she wants her soul to be bound to mine or something like that. She says that the process is that we have to have sex, then when I'm cumming in her she will slit her throat and die. Then I immediately begin to eat her, starting with her heart then going for the rest of the body. When I've finished, then we will truly be one according to her. It's the weirdest turn on I've ever heard of and I don't really know what to do.