Confused About How A Character Died

I was reading a book last week and I ran across this line:

The woman never took her gaze off Narin as she wrenched the blade across her throat.

My first thought was, if you’re going to commit suicide, would you really do it by cutting your own throat?

I am thinking it would be a little difficult. It might be easier to stab your heart or slice through a major artery (one of which is in the neck).

I suppose that’s what the writer could have meant – that she carotid artery and bled out in minutes. Especially since blood cascaded out from the wound and than she was dead.

But it doesn’t sound like it. So now I am not sure what happened and I am confused. I don’t like being confused.