Trouble with cutting bridle paths...?

Let her see the scissors and touch the handle part to her face so she can realize it won't bite her. If she's okay with that open and close the scissors near her face. If that's whats really scaring her just keep doing that everyday until she used to it. Try putting WD40 on the scissors so they don't make as much noise and give her a little grain to nibble at while you cut it.