if lucy is a human and tells the truth, minna can't be a vampire, cause if the vampire would lie she would say "yes we are" when she was sane, and offcourse not when she was insane. because she had to tell the truth.
If lucy is a vampire who is sane and makes the same statement, they can't be both crazy.
she lies with saying that they are both insane when she is sane, and her sister says they arent both insane, so the minna tells the truth. so she must be the sane human. while lucy is the sane vampire.
Am i correct?
