You might want to get a digital voice recorder for several reasons. First most voice messages will only save for about 2 weeks and will be automatically deleted by your phone provider. You need to record these so they are not lost. Second I would record EVERYTHING said between the 2 of you. The recorders are small and fit easily in a shirt pocket or laid on a desk or such in the room. Her rants will show the people where the problem is. Also wise to have all of her treats and so on recorded too. If she starts telling damaging lies to hurt your business and your name and character there are consequences for it. Having her saying it all recorded will prove your argument when she lies about saying any of it.
Be very careful though of what you say in the heat of the moment for it too will be recorded and could damage your side of this.
Some people need their ass whooped to show them the world doesn't center around them.
