It actually is wile, not while. wile means to entice, lure or manipulate someone or something to do as you want. It sounds more like she's describing how she will stand by a killer as he is being discovered.
It actually is wile, not while. wile means to entice, lure or manipulate someone or something to do as you want. It sounds more like she's describing how she will stand by a killer as he is being discovered.