Oh my, BayArea.... This is not good! You need to get a lawyer and figure out what to do. If she is running around with knives in her hands and banging down doors with a hammer, there's no telling what could happen. This is definitely a very dangerous situation and you need to protect your kids and yourself. When she acts up like this, call the police on her yourself! There is already a record that they have been there before and they will definitely take her away if they need to. Don't be afraid to let that happen. I feel for you and your situation. Be safe!