you should be very careful she will make the abuse story sound so good that police will ge involved  make notes and try to get as many doctors to say that she is mental ill and if she is on meds that make sure that is said.  Any time the police are called get the report number so they can look the last report up very quickly.  the more reports the better for you.  Your kids can never and i mean never be left alone with her because that is your weak spot and will hurt them.  She will do it anyway, but you can be there for them.  I have gotten to a point where my daughter is not allowed in the house unless me or my husband are there due to the problems we face.  They do have alarms for the doors if they are opened they make noise put one on the outside of her door or that of your other children.  Good luck