Mental Health Support

You need to call the police and have her removed to a medical facility or something, like now. If she can't control her rage, something has to change and it isn't you.

Have her removed because she is terrorizing you in your own home and threatening harm to you and your pets. And if she want to burn down your home...

You've made it to this point, of realizing you have to separate, spare yourself more harm. She won't get help if nobody makes the first move.