is the rope made of hair no

Was it accidental? no

Also, was the murderer a barber by any chance? no

Did she know the killer? no

Is her neck broken? no

Did she consent to being tied to the chair? no

Was she tied to the chair before death? yes, although it's not relevant

Did she consent to being shaved? no

Was she concious during the shaving? no

Was she concious seconds before murdering? yes

Was she concious while being tied up? yes, although it's not relevant

Is this situation hypothetical? yes, NeoTifa isn't actually dead.

Is the rope made out of her hair? no